diff --git a/dlls/vcomp/main.c b/dlls/vcomp/main.c
index fa0b84300f1..90caac83750 100644
--- a/dlls/vcomp/main.c
+++ b/dlls/vcomp/main.c
@@ -1772,7 +1772,7 @@ static void CDECL c2vectparallel_wrapper(int start, int end, int step, int end_i
     _vcomp_fork_call_wrapper(function, nargs, wrapper_args);
 }
 
-void CDECL C2VectParallel(int start, int end, int step, BOOL end_included, int thread_count,
+void WINAPIV C2VectParallel(int start, int end, int step, BOOL end_included, int thread_count,
         BOOL dynamic_distribution, void *function, int nargs, ...)
 {
     struct vcomp_thread_data *thread_data;
diff --git a/dlls/vcomp110/tests/vcomp110.c b/dlls/vcomp110/tests/vcomp110.c
index 65e3c36aa01..e0be668dffd 100644
--- a/dlls/vcomp110/tests/vcomp110.c
+++ b/dlls/vcomp110/tests/vcomp110.c
@@ -23,7 +23,7 @@
 
 static HMODULE vcomp_handle;
 
-static void  (CDECL   *pC2VectParallel)(int start, int end, int step, BOOL end_included, int thread_count,
+static void  (WINAPIV *pC2VectParallel)(int start, int end, int step, BOOL end_included, int thread_count,
         BOOL dynamic_distribution, void *function, int nargs, ...);
 static int   (CDECL   *p_vcomp_get_thread_num)(void);
 static int   (CDECL   *pomp_get_num_threads)(void);