diff --git a/hugsql-core/src/hugsql/core.clj b/hugsql-core/src/hugsql/core.clj
index 34264c6..d1fbc1a 100644
--- a/hugsql-core/src/hugsql/core.clj
+++ b/hugsql-core/src/hugsql/core.clj
@@ -57,7 +57,7 @@
    and throw an exception if mismatch."
   [sql-template param-data]
   (doseq [k (map :name (filter map? sql-template))]
-    (when-not (get-in param-data (parameters/deep-get-vec k))
+    (when-not (contains? param-data (first (parameters/deep-get-vec k)))
       (throw (ex-info
               (str "Parameter Mismatch: "
                    k " parameter data not found.") {})))))
diff --git a/hugsql-core/test/hugsql/core_test.clj b/hugsql-core/test/hugsql/core_test.clj
index 260feca..a7fdadd 100644
--- a/hugsql-core/test/hugsql/core_test.clj
+++ b/hugsql-core/test/hugsql/core_test.clj
@@ -173,7 +173,10 @@
                               (one-value-param-sqlvec {:x 1})))
         (is (thrown-with-msg? ExceptionInfo
                               #"Parameter Mismatch: :id parameter data not found."
-                              (one-value-param db {:x 1}))))
+                              (one-value-param db {:x 1})))
+        ;; does not throw on false
+        (is (= ["select * from test where id = ?" false]
+               (one-value-param-sqlvec {:id false}))))
 
       (testing "database commands/queries"
         (condp = db-name