diff --git a/extras/fixture/test/unity_output_Spy.c b/extras/fixture/test/unity_output_Spy.c
index 5aa48f1..54fca51 100644
--- a/extras/fixture/test/unity_output_Spy.c
+++ b/extras/fixture/test/unity_output_Spy.c
@@ -33,7 +33,7 @@ void UnityOutputCharSpy_Destroy(void)
     free(buffer);
 }
 
-int UnityOutputCharSpy_OutputChar(int c)
+void UnityOutputCharSpy_OutputChar(int c)
 {
     if (spy_enable)
     {
@@ -44,7 +44,6 @@ int UnityOutputCharSpy_OutputChar(int c)
     {
         putchar(c);
     }
-    return c;
 }
 
 const char * UnityOutputCharSpy_Get(void)
diff --git a/extras/fixture/test/unity_output_Spy.h b/extras/fixture/test/unity_output_Spy.h
index 791f6a5..6e7af7b 100644
--- a/extras/fixture/test/unity_output_Spy.h
+++ b/extras/fixture/test/unity_output_Spy.h
@@ -10,7 +10,7 @@
 
 void UnityOutputCharSpy_Create(int s);
 void UnityOutputCharSpy_Destroy(void);
-int  UnityOutputCharSpy_OutputChar(int c);
+void UnityOutputCharSpy_OutputChar(int c);
 const char * UnityOutputCharSpy_Get(void);
 void UnityOutputCharSpy_Enable(int enable);