diff --git a/partiql-eval/src/main/kotlin/org/partiql/eval/internal/operator/rex/ExprCallDynamic.kt b/partiql-eval/src/main/kotlin/org/partiql/eval/internal/operator/rex/ExprCallDynamic.kt
index 4230b85077..3eb91f0205 100644
--- a/partiql-eval/src/main/kotlin/org/partiql/eval/internal/operator/rex/ExprCallDynamic.kt
+++ b/partiql-eval/src/main/kotlin/org/partiql/eval/internal/operator/rex/ExprCallDynamic.kt
@@ -27,7 +27,7 @@ internal class ExprCallDynamic(
         val actualArgs = args.map { it.eval(record) }.toTypedArray()
         candidates.forEach { candidate ->
             if (candidate.matches(actualArgs)) {
-                candidate.eval(actualArgs)
+                return candidate.eval(actualArgs)
             }
         }
         throw TypeCheckException()
diff --git a/partiql-eval/src/test/kotlin/org/partiql/eval/internal/PartiQLEngineDefaultTest.kt b/partiql-eval/src/test/kotlin/org/partiql/eval/internal/PartiQLEngineDefaultTest.kt
index 44966e0b35..4dc98122da 100644
--- a/partiql-eval/src/test/kotlin/org/partiql/eval/internal/PartiQLEngineDefaultTest.kt
+++ b/partiql-eval/src/test/kotlin/org/partiql/eval/internal/PartiQLEngineDefaultTest.kt
@@ -262,6 +262,12 @@ class PartiQLEngineDefaultTest {
                     ;
                 """.trimIndent(),
                 expected = stringValue("isOne")
+            ),
+            SuccessTestCase(
+                input = """
+                    `null.bool` IS NULL
+                """.trimIndent(),
+                expected = boolValue(true)
             )
         )
     }