diff --git a/winpr/libwinpr/synch/test/TestSynchCritical.c b/winpr/libwinpr/synch/test/TestSynchCritical.c
index 139885a81..b44a70a1e 100644
--- a/winpr/libwinpr/synch/test/TestSynchCritical.c
+++ b/winpr/libwinpr/synch/test/TestSynchCritical.c
@@ -8,7 +8,7 @@
 #include <winpr/thread.h>
 #include <winpr/interlocked.h>
 
-#define TEST_SYNC_CRITICAL_TEST1_RUNTIME_MS 50
+#define TEST_SYNC_CRITICAL_TEST1_RUNTIME_MS 100
 #define TEST_SYNC_CRITICAL_TEST1_RUNS 4
 
 static CRITICAL_SECTION critical;