diff --git a/libs/strmbase/filter.c b/libs/strmbase/filter.c
index fa8738188a2..3229c7ba82a 100644
--- a/libs/strmbase/filter.c
+++ b/libs/strmbase/filter.c
@@ -524,10 +524,12 @@ void strmbase_filter_init(struct strmbase_filter *filter, IUnknown *outer,
     filter->outer_unk = outer ? outer : &filter->IUnknown_inner;
     filter->refcount = 1;
 
-    InitializeCriticalSectionEx(&filter->filter_cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO);
+    if (!InitializeCriticalSectionEx(&filter->filter_cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO))
+        InitializeCriticalSection(&filter->filter_cs);
     if (filter->filter_cs.DebugInfo != (RTL_CRITICAL_SECTION_DEBUG *)-1)
         filter->filter_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": strmbase_filter.filter_cs");
-    InitializeCriticalSectionEx(&filter->stream_cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO);
+    if (!InitializeCriticalSectionEx(&filter->stream_cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO))
+        InitializeCriticalSection(&filter->stream_cs);
     if (filter->stream_cs.DebugInfo != (RTL_CRITICAL_SECTION_DEBUG *)-1)
         filter->stream_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": strmbase_filter.stream_cs");
     filter->clsid = *clsid;
diff --git a/libs/strmbase/pospass.c b/libs/strmbase/pospass.c
index 79ebf44cf24..2b6321432bd 100644
--- a/libs/strmbase/pospass.c
+++ b/libs/strmbase/pospass.c
@@ -730,7 +730,8 @@ void strmbase_passthrough_init(struct strmbase_passthrough *passthrough, IUnknow
     passthrough->IMediaPosition_iface.lpVtbl = &IMediaPositionPassThru_Vtbl;
     passthrough->IMediaSeeking_iface.lpVtbl = &IMediaSeekingPassThru_Vtbl;
     passthrough->ISeekingPassThru_iface.lpVtbl = &ISeekingPassThru_Vtbl;
-    InitializeCriticalSectionEx(&passthrough->time_cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO);
+    if (!InitializeCriticalSectionEx(&passthrough->time_cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO))
+        InitializeCriticalSection(&passthrough->time_cs);
     passthrough->time_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": strmbase_passthrough.time_cs" );
 }
 
diff --git a/libs/strmbase/seeking.c b/libs/strmbase/seeking.c
index 574083b985f..62e6d454a57 100644
--- a/libs/strmbase/seeking.c
+++ b/libs/strmbase/seeking.c
@@ -49,7 +49,8 @@ HRESULT strmbase_seeking_init(SourceSeeking *pSeeking, const IMediaSeekingVtbl *
     pSeeking->llDuration = pSeeking->llStop;
     pSeeking->dRate = 1.0;
     pSeeking->timeformat = TIME_FORMAT_MEDIA_TIME;
-    InitializeCriticalSectionEx(&pSeeking->cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO);
+    if (!InitializeCriticalSectionEx(&pSeeking->cs, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO))
+        InitializeCriticalSection(&pSeeking->cs);
     pSeeking->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": SourceSeeking.cs");
     return S_OK;
 }