diff --git a/src/core/testdata/InvalidExpression3.q b/src/core/testdata/InvalidExpression3.q
index 752d00b..0647dcc 100644
--- a/src/core/testdata/InvalidExpression3.q
+++ b/src/core/testdata/InvalidExpression3.q
@@ -1,3 +1,5 @@
 main() {
-	syscall(())
-}
\ No newline at end of file
+	f(())
+}
+
+f(_ any) {}
\ No newline at end of file
diff --git a/src/core/testdata/InvalidExpression4.q b/src/core/testdata/InvalidExpression4.q
index 77e99f8..07682ac 100644
--- a/src/core/testdata/InvalidExpression4.q
+++ b/src/core/testdata/InvalidExpression4.q
@@ -1,3 +1,5 @@
 main() {
-	syscall(+, -, *, /)
-}
\ No newline at end of file
+	f(+, -, *, /)
+}
+
+f(_ any, _ any, _ any, _ any) {}
\ No newline at end of file
diff --git a/src/core/testdata/MissingOperand.q b/src/core/testdata/MissingOperand.q
index df46622..bc83eb5 100644
--- a/src/core/testdata/MissingOperand.q
+++ b/src/core/testdata/MissingOperand.q
@@ -1,3 +1,5 @@
 main() {
-	syscall(1+)
-}
\ No newline at end of file
+	f(1+)
+}
+
+f(_ any) {}
\ No newline at end of file
diff --git a/src/core/testdata/UnknownIdentifier.q b/src/core/testdata/UnknownIdentifier.q
index 9b13514..b7489e9 100644
--- a/src/core/testdata/UnknownIdentifier.q
+++ b/src/core/testdata/UnknownIdentifier.q
@@ -1,3 +1,5 @@
 main() {
-	syscall(x)
-}
\ No newline at end of file
+	f(x)
+}
+
+f(_ any) {}
\ No newline at end of file