--- hatari/src/includes/dim.h	2019/04/01 07:14:51	1.1.1.3
+++ hatari/src/includes/dim.h	2019/04/09 08:48:44	1.1.1.4
@@ -5,6 +5,6 @@
   your option any later version. Read the file gpl.txt for details.
 */
 
-extern bool DIM_FileNameIsDIM(char *pszFileName, bool bAllowGZ);
-extern Uint8 *DIM_ReadDisk(char *pszFileName, long *pImageSize);
-extern bool DIM_WriteDisk(char *pszFileName, Uint8 *pBuffer, int ImageSize);
+extern bool DIM_FileNameIsDIM(const char *pszFileName, bool bAllowGZ);
+extern Uint8 *DIM_ReadDisk(const char *pszFileName, long *pImageSize);
+extern bool DIM_WriteDisk(const char *pszFileName, Uint8 *pBuffer, int ImageSize);