diff --git a/samtranslator/open_api/open_api.py b/samtranslator/open_api/open_api.py
index 46f685865..14ab3dcac 100644
--- a/samtranslator/open_api/open_api.py
+++ b/samtranslator/open_api/open_api.py
@@ -90,10 +90,12 @@ def get_integration_function_logical_id(self, path_name, method_name):
 
         # Extract the integration uri out of a conditional if necessary
         uri = integration.get("uri")
+        if not isinstance(uri, dict):
+            return ""
         if self._CONDITIONAL_IF in uri:
             arn = uri[self._CONDITIONAL_IF][1].get("Fn::Sub")
         else:
-            arn = uri.get("Fn::Sub")
+            arn = uri.get("Fn::Sub", "")
 
         # Extract lambda integration (${LambdaName.Arn}) and split ".Arn" off from it
         regex = "([A-Za-z0-9]+\.Arn)"
diff --git a/tests/translator/input/explicit_http_api.yaml b/tests/translator/input/explicit_http_api.yaml
index afab76416..d07bc65de 100644
--- a/tests/translator/input/explicit_http_api.yaml
+++ b/tests/translator/input/explicit_http_api.yaml
@@ -10,10 +10,12 @@ Resources:
           Type: HttpApi
           Properties:
             ApiId: !Ref MyApi
-        SimpleCase2:
+        BasePath:
           Type: HttpApi
           Properties:
             ApiId: !Ref MyApi2
+            Path: /
+            Method: get
   MyApi:
     Type: AWS::Serverless::HttpApi
     Properties:
@@ -40,4 +42,20 @@ Resources:
               audience:
                 - MyApi
             IdentitySource: "$request.querystring.param"
-        DefaultAuthorizer: OAuth2
\ No newline at end of file
+        DefaultAuthorizer: OAuth2
+      DefinitionBody:
+        openapi: '3.0'
+        info:
+          title: !Sub ${AWS::StackName}-Apiv2
+        paths:
+          /:
+            get:
+              responses: {}
+          $default:
+            x-amazon-apigateway-any-method:
+              isDefaultRoute: true
+              x-amazon-apigateway-integration:
+                httpMethod: ANY
+                type: http_proxy
+                uri: https://www.alphavantage.co/
+                payloadFormatVersion: '1.0'
\ No newline at end of file
diff --git a/tests/translator/output/aws-cn/explicit_http_api.json b/tests/translator/output/aws-cn/explicit_http_api.json
index 3672f8b18..2d1e8cec9 100644
--- a/tests/translator/output/aws-cn/explicit_http_api.json
+++ b/tests/translator/output/aws-cn/explicit_http_api.json
@@ -75,14 +75,29 @@
       "Properties": {
         "Body": {
           "info": {
-            "version": "1.0", 
             "title": {
-              "Ref": "AWS::StackName"
+              "Fn::Sub": "${AWS::StackName}-Apiv2"
             }
           }, 
           "paths": {
             "$default": {
               "x-amazon-apigateway-any-method": {
+                "x-amazon-apigateway-integration": {
+                  "httpMethod": "ANY", 
+                  "type": "http_proxy", 
+                  "uri": "https://www.alphavantage.co/", 
+                  "payloadFormatVersion": "1.0"
+                }, 
+                "isDefaultRoute": true, 
+                "security": [
+                  {
+                    "OAuth2": []
+                  }
+                ]
+              }
+            }, 
+            "/": {
+              "get": {
                 "x-amazon-apigateway-integration": {
                   "httpMethod": "POST", 
                   "type": "aws_proxy", 
@@ -91,7 +106,6 @@
                   }, 
                   "payloadFormatVersion": "1.0"
                 }, 
-                "isDefaultRoute": true, 
                 "security": [
                   {
                     "OAuth2": []
@@ -101,7 +115,7 @@
               }
             }
           }, 
-          "openapi": "3.0.1", 
+          "openapi": "3.0", 
           "components": {
             "securitySchemes": {
               "OAuth2": {
@@ -158,7 +172,7 @@
         ]
       }
     }, 
-    "HttpApiFunctionSimpleCase2Permission": {
+    "HttpApiFunctionBasePathPermission": {
       "Type": "AWS::Lambda::Permission", 
       "Properties": {
         "Action": "lambda:InvokeFunction", 
@@ -168,7 +182,7 @@
         }, 
         "SourceArn": {
           "Fn::Sub": [
-            "arn:${AWS::Partition}:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/*", 
+            "arn:${AWS::Partition}:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/GET/", 
             {
               "__Stage__": "*", 
               "__ApiId__": {
diff --git a/tests/translator/output/aws-us-gov/explicit_http_api.json b/tests/translator/output/aws-us-gov/explicit_http_api.json
index 0c97ee2c8..5c0e1761e 100644
--- a/tests/translator/output/aws-us-gov/explicit_http_api.json
+++ b/tests/translator/output/aws-us-gov/explicit_http_api.json
@@ -75,14 +75,29 @@
       "Properties": {
         "Body": {
           "info": {
-            "version": "1.0", 
             "title": {
-              "Ref": "AWS::StackName"
+              "Fn::Sub": "${AWS::StackName}-Apiv2"
             }
           }, 
           "paths": {
             "$default": {
               "x-amazon-apigateway-any-method": {
+                "x-amazon-apigateway-integration": {
+                  "httpMethod": "ANY", 
+                  "type": "http_proxy", 
+                  "uri": "https://www.alphavantage.co/", 
+                  "payloadFormatVersion": "1.0"
+                }, 
+                "isDefaultRoute": true, 
+                "security": [
+                  {
+                    "OAuth2": []
+                  }
+                ]
+              }
+            }, 
+            "/": {
+              "get": {
                 "x-amazon-apigateway-integration": {
                   "httpMethod": "POST", 
                   "type": "aws_proxy", 
@@ -91,7 +106,6 @@
                   }, 
                   "payloadFormatVersion": "1.0"
                 }, 
-                "isDefaultRoute": true, 
                 "security": [
                   {
                     "OAuth2": []
@@ -101,7 +115,7 @@
               }
             }
           }, 
-          "openapi": "3.0.1", 
+          "openapi": "3.0", 
           "components": {
             "securitySchemes": {
               "OAuth2": {
@@ -158,7 +172,7 @@
         ]
       }
     }, 
-    "HttpApiFunctionSimpleCase2Permission": {
+    "HttpApiFunctionBasePathPermission": {
       "Type": "AWS::Lambda::Permission", 
       "Properties": {
         "Action": "lambda:InvokeFunction", 
@@ -168,7 +182,7 @@
         }, 
         "SourceArn": {
           "Fn::Sub": [
-            "arn:${AWS::Partition}:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/*", 
+            "arn:${AWS::Partition}:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/GET/", 
             {
               "__Stage__": "*", 
               "__ApiId__": {
diff --git a/tests/translator/output/explicit_http_api.json b/tests/translator/output/explicit_http_api.json
index 070bd8935..3f7e4c22e 100644
--- a/tests/translator/output/explicit_http_api.json
+++ b/tests/translator/output/explicit_http_api.json
@@ -75,14 +75,29 @@
       "Properties": {
         "Body": {
           "info": {
-            "version": "1.0", 
             "title": {
-              "Ref": "AWS::StackName"
+              "Fn::Sub": "${AWS::StackName}-Apiv2"
             }
           }, 
           "paths": {
             "$default": {
               "x-amazon-apigateway-any-method": {
+                "x-amazon-apigateway-integration": {
+                  "httpMethod": "ANY", 
+                  "type": "http_proxy", 
+                  "uri": "https://www.alphavantage.co/", 
+                  "payloadFormatVersion": "1.0"
+                }, 
+                "isDefaultRoute": true, 
+                "security": [
+                  {
+                    "OAuth2": []
+                  }
+                ]
+              }
+            }, 
+            "/": {
+              "get": {
                 "x-amazon-apigateway-integration": {
                   "httpMethod": "POST", 
                   "type": "aws_proxy", 
@@ -91,7 +106,6 @@
                   }, 
                   "payloadFormatVersion": "1.0"
                 }, 
-                "isDefaultRoute": true, 
                 "security": [
                   {
                     "OAuth2": []
@@ -101,7 +115,7 @@
               }
             }
           }, 
-          "openapi": "3.0.1", 
+          "openapi": "3.0", 
           "components": {
             "securitySchemes": {
               "OAuth2": {
@@ -158,7 +172,7 @@
         ]
       }
     }, 
-    "HttpApiFunctionSimpleCase2Permission": {
+    "HttpApiFunctionBasePathPermission": {
       "Type": "AWS::Lambda::Permission", 
       "Properties": {
         "Action": "lambda:InvokeFunction", 
@@ -168,7 +182,7 @@
         }, 
         "SourceArn": {
           "Fn::Sub": [
-            "arn:${AWS::Partition}:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/*", 
+            "arn:${AWS::Partition}:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/GET/", 
             {
               "__Stage__": "*", 
               "__ApiId__": {