diff --git a/test/api-digester/stability-stdlib-abi.swift b/test/api-digester/stability-stdlib-abi.swift
index 3b0ebe1ce30d6..2d4fad57f5369 100644
--- a/test/api-digester/stability-stdlib-abi.swift
+++ b/test/api-digester/stability-stdlib-abi.swift
@@ -2,7 +2,7 @@
 // RUN: %empty-directory(%t.tmp)
 // mkdir %t.tmp/module-cache && mkdir %t.tmp/dummy.sdk
 // RUN: %api-digester -dump-sdk -module Swift -o %t.tmp/current-stdlib.json -module-cache-path %t.tmp/module-cache -sdk %t.tmp/dummy.sdk -abi
-// RUN: %api-digester -diagnose-sdk -input-paths %S/Inputs/stdlib-stable-abi.json -input-paths %t.tmp/current-stdlib.json -abi -o %t.tmp/changes.txt
+// RUN: %api-digester -diagnose-sdk -input-paths %S/Inputs/stdlib-stable-abi.json -input-paths %t.tmp/current-stdlib.json -abi -o %t.tmp/changes.txt -v
 // RUN: %clang -E -P -x c %S/Outputs/stability-stdlib-abi.swift.expected -o - | sed '/^\s*$/d' | sort > %t.tmp/stability-stdlib-abi.swift.expected
 // RUN: %clang -E -P -x c %t.tmp/changes.txt -o - | sed '/^\s*$/d' | sort > %t.tmp/changes.txt.tmp
 // RUN: diff -u %t.tmp/stability-stdlib-abi.swift.expected %t.tmp/changes.txt.tmp
diff --git a/test/api-digester/stability-stdlib-source.swift b/test/api-digester/stability-stdlib-source.swift
index 4dc9c486cc3c0..d122a0dc99356 100644
--- a/test/api-digester/stability-stdlib-source.swift
+++ b/test/api-digester/stability-stdlib-source.swift
@@ -2,7 +2,7 @@
 // RUN: %empty-directory(%t.tmp)
 // mkdir %t.tmp/module-cache && mkdir %t.tmp/dummy.sdk
 // RUN: %api-digester -dump-sdk -module Swift -o %t.tmp/current-stdlib.json -module-cache-path %t.tmp/module-cache -sdk %t.tmp/dummy.sdk
-// RUN: %api-digester -diagnose-sdk -input-paths %S/Inputs/stdlib-stable.json -input-paths %t.tmp/current-stdlib.json -o %t.tmp/changes.txt
+// RUN: %api-digester -diagnose-sdk -input-paths %S/Inputs/stdlib-stable.json -input-paths %t.tmp/current-stdlib.json -o %t.tmp/changes.txt -v
 // RUN: %clang -E -P -x c %S/Outputs/stability-stdlib-source.swift.expected -o - | sed '/^\s*$/d' | sort > %t.tmp/stability-stdlib-source.swift.expected
 // RUN: %clang -E -P -x c %t.tmp/changes.txt -o - | sed '/^\s*$/d' | sort > %t.tmp/changes.txt.tmp
 // RUN: diff -u %t.tmp/stability-stdlib-source.swift.expected %t.tmp/changes.txt.tmp
diff --git a/tools/swift-api-digester/swift-api-digester.cpp b/tools/swift-api-digester/swift-api-digester.cpp
index 8181166a72beb..4c859d31b4924 100644
--- a/tools/swift-api-digester/swift-api-digester.cpp
+++ b/tools/swift-api-digester/swift-api-digester.cpp
@@ -941,9 +941,9 @@ class PrunePass : public MatchedNodeListener, public SDKTreeDiffPass {
 
   static void debugMatch(SDKNode *Left, SDKNode *Right, NodeMatchReason Reason,
                          llvm::raw_ostream &OS) {
-    if (Left && isa<SDKNodeType>(Left))
+    if (Left && !isa<SDKNodeDecl>(Left))
       return;
-    if (Right && isa<SDKNodeType>(Right))
+    if (Right && !isa<SDKNodeDecl>(Right))
       return;
     StringRef Arrow = "  <-------->  ";
     switch (Reason) {