diff --git a/pm_shared/pm_shared.c b/pm_shared/pm_shared.c
index aaf0d3d..b26f867 100644
--- a/pm_shared/pm_shared.c
+++ b/pm_shared/pm_shared.c
@@ -451,7 +451,7 @@ void PM_PlayStepSound(int step, float fvol)
 	}
 }
 
-int PM_MapTextureTypeStepType(chTextureType)
+int PM_MapTextureTypeStepType( char chTextureType)
 {
 	switch (chTextureType)
 	{
@@ -2799,4 +2799,4 @@ void PM_Init(struct playermove_s *ppmove)
 	PM_InitTextureTypes();
 
 	pm_shared_initialized = 1;
-}
\ No newline at end of file
+}