diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index 970ea07c..b346e619 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -104,20 +104,6 @@ typedef struct ALsource {
     ALuint id;
 } ALsource;
 
-inline void LockSourcesRead(ALCcontext *context)
-{ LockUIntMapRead(&context->SourceMap); }
-inline void UnlockSourcesRead(ALCcontext *context)
-{ UnlockUIntMapRead(&context->SourceMap); }
-inline void LockSourcesWrite(ALCcontext *context)
-{ LockUIntMapWrite(&context->SourceMap); }
-inline void UnlockSourcesWrite(ALCcontext *context)
-{ UnlockUIntMapWrite(&context->SourceMap); }
-
-inline struct ALsource *LookupSource(ALCcontext *context, ALuint id)
-{ return (struct ALsource*)LookupUIntMapKeyNoLock(&context->SourceMap, id); }
-inline struct ALsource *RemoveSource(ALCcontext *context, ALuint id)
-{ return (struct ALsource*)RemoveUIntMapKeyNoLock(&context->SourceMap, id); }
-
 void UpdateAllSourceProps(ALCcontext *context);
 
 ALvoid ReleaseALSources(ALCcontext *Context);
diff --git a/OpenAL32/alSource.c b/OpenAL32/alSource.c
index 17d57852..b5f8a94f 100644
--- a/OpenAL32/alSource.c
+++ b/OpenAL32/alSource.c
@@ -40,13 +40,6 @@
 #include "almalloc.h"
 
 
-extern inline void LockSourcesRead(ALCcontext *context);
-extern inline void UnlockSourcesRead(ALCcontext *context);
-extern inline void LockSourcesWrite(ALCcontext *context);
-extern inline void UnlockSourcesWrite(ALCcontext *context);
-extern inline struct ALsource *LookupSource(ALCcontext *context, ALuint id);
-extern inline struct ALsource *RemoveSource(ALCcontext *context, ALuint id);
-
 static void InitSourceParams(ALsource *Source, ALsizei num_sends);
 static void DeinitSource(ALsource *source, ALsizei num_sends);
 static void UpdateSourceProps(ALsource *source, ALvoice *voice, ALsizei num_sends, ALCcontext *context);
@@ -56,6 +49,20 @@ static ALdouble GetSourceOffset(ALsource *Source, ALenum name, ALCcontext *conte
 static ALboolean GetSampleOffset(ALsource *Source, ALuint *offset, ALsizei *frac);
 static ALboolean ApplyOffset(ALsource *Source, ALvoice *voice);
 
+static inline void LockSourcesRead(ALCcontext *context)
+{ LockUIntMapRead(&context->SourceMap); }
+static inline void UnlockSourcesRead(ALCcontext *context)
+{ UnlockUIntMapRead(&context->SourceMap); }
+static inline void LockSourcesWrite(ALCcontext *context)
+{ LockUIntMapWrite(&context->SourceMap); }
+static inline void UnlockSourcesWrite(ALCcontext *context)
+{ UnlockUIntMapWrite(&context->SourceMap); }
+
+static inline ALsource *LookupSource(ALCcontext *context, ALuint id)
+{ return (ALsource*)LookupUIntMapKeyNoLock(&context->SourceMap, id); }
+static inline ALsource *RemoveSource(ALCcontext *context, ALuint id)
+{ return (ALsource*)RemoveUIntMapKeyNoLock(&context->SourceMap, id); }
+
 static inline ALbuffer *LookupBuffer(ALCdevice *device, ALuint id)
 {
     BufferSubList *sublist;