diff --git a/nac3standalone/demo/classes.py b/nac3standalone/demo/classes.py
index 14df8f2f..f3cf9517 100644
--- a/nac3standalone/demo/classes.py
+++ b/nac3standalone/demo/classes.py
@@ -1,9 +1,9 @@
 @extern
-def output_int(x: int32):
+def output_int32(x: int32):
     ...
 
 @extern
-def output_long(x: int64):
+def output_int64(x: int64):
     ...
 
 
@@ -31,10 +31,10 @@ class B:
 
 def run() -> int32:
     a = A(10)
-    output_int(a.a)
+    output_int32(a.a)
 
     a = A(20)
-    output_int(a.a)
-    output_int(a.get_a())
-    output_int(a.get_b().b)
+    output_int32(a.a)
+    output_int32(a.get_a())
+    output_int32(a.get_b().b)
     return 0
diff --git a/nac3standalone/demo/demo.c b/nac3standalone/demo/demo.c
index 90e4c05b..ad19ee1e 100644
--- a/nac3standalone/demo/demo.c
+++ b/nac3standalone/demo/demo.c
@@ -1,11 +1,11 @@
 #include <stdio.h>
 #include <string.h>
 
-void output_int(int x) {
+void output_int32(int x) {
     printf("%d\n", x);
 }
 
-void output_long(long x) {
+void output_int64(long x) {
     printf("%ld\n", x);
 }