diff --git a/dlls/quartz/tests/avisplitter.c b/dlls/quartz/tests/avisplitter.c
index ad019060632..f9da610f965 100644
--- a/dlls/quartz/tests/avisplitter.c
+++ b/dlls/quartz/tests/avisplitter.c
@@ -57,7 +57,7 @@ static int count_threads(void)
     return threads;
 }
 
-static int create_avisplitter(void)
+static BOOL create_avisplitter(void)
 {
     HRESULT hr;
 
diff --git a/dlls/quartz/tests/dsoundrender.c b/dlls/quartz/tests/dsoundrender.c
index a3e477831e6..745a32f3e01 100644
--- a/dlls/quartz/tests/dsoundrender.c
+++ b/dlls/quartz/tests/dsoundrender.c
@@ -39,7 +39,7 @@
 
 static IUnknown *pDSRender = NULL;
 
-static int create_dsound_renderer(void)
+static BOOL create_dsound_renderer(void)
 {
     HRESULT hr;