diff --git a/3rdParty/Storm/Source/storm.cpp b/3rdParty/Storm/Source/storm.cpp
index c09968d57..ef9bbde9d 100644
--- a/3rdParty/Storm/Source/storm.cpp
+++ b/3rdParty/Storm/Source/storm.cpp
@@ -227,7 +227,7 @@ int STORMAPI SBigToBinaryBuffer(void *buffer, int length, int a3, int a4) rInt;
 void __stdcall SDrawMessageBox(const char *,const char *,int) rVoid;
 void __cdecl SDrawDestroy(void) rVoid;
 BOOLEAN __cdecl StormDestroy(void) rBool;
-BOOL __stdcall SFileSetBasePath(char *) rBool;
+BOOL __stdcall SFileSetBasePath(const char *) rBool;
 void __cdecl SDrawRealizePalette(void) rVoid;
 BOOL __cdecl SVidPlayContinue(void) rBool;
 BOOL __stdcall SNetGetOwnerTurnsWaiting(DWORD *) rBool;
diff --git a/3rdParty/Storm/Source/storm.h b/3rdParty/Storm/Source/storm.h
index d3d3e5eac..9cbd6aae4 100644
--- a/3rdParty/Storm/Source/storm.h
+++ b/3rdParty/Storm/Source/storm.h
@@ -1323,7 +1323,7 @@ int STORMAPI SBigToBinaryBuffer(void *buffer, int length, int a3, int a4);
 void __stdcall SDrawMessageBox(const char *,const char *,int);
 void __cdecl SDrawDestroy(void);
 BOOLEAN __cdecl StormDestroy(void);
-BOOL __stdcall SFileSetBasePath(char *);
+BOOL __stdcall SFileSetBasePath(const char *);
 void __cdecl SDrawRealizePalette(void);
 BOOL __cdecl SVidPlayContinue(void);
 BOOL __stdcall SNetGetOwnerTurnsWaiting(DWORD *);