--- a/tools/gfxconv.c	Fri May 16 20:07:38 2014 +0300
+++ b/tools/gfxconv.c	Fri May 16 20:08:39 2014 +0300
@@ -247,6 +247,29 @@
 }
 
 
+BOOL dmGetC64FormatByExt(const char *fext, int *format, int *subformat)
+{
+    int i;
+    if (fext == NULL)
+        return FALSE;
+
+    for (i = 0; i < ndmC64ImageFormats; i++)
+    {
+        const DMC64ImageFormat *fmt = &dmC64ImageFormats[i];
+        if (fmt->fext != NULL &&
+            strcasecmp(fext, fmt->fext) == 0)
+        {
+            *format = FFMT_BITMAP;
+            *subformat = i;
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+
+
 BOOL dmGetFormatByExt(const char *fext, int *format, int *subformat)
 {
     int i;
@@ -265,18 +288,6 @@
         }
     }
 
-    for (i = 0; i < ndmC64ImageFormats; i++)
-    {
-        const DMC64ImageFormat *fmt = &dmC64ImageFormats[i];
-        if (fmt->fext != NULL &&
-            strcasecmp(fext, fmt->fext) == 0)
-        {
-            *format = FFMT_BITMAP;
-            *subformat = i;
-            return TRUE;
-        }
-    }
-
     return FALSE;
 }
 
@@ -528,7 +539,8 @@
             break;
 
         case 5:
-            if (!dmGetFormatByExt(optArg, &optOutFormat, &optOutSubFormat))
+            if (!dmGetFormatByExt(optArg, &optOutFormat, &optOutSubFormat) &&
+                !dmGetC64FormatByExt(optArg, &optOutFormat, &optOutSubFormat))
             {
                 dmError("Invalid output format '%s'.\n", optArg);
                 return FALSE;
@@ -1522,7 +1534,8 @@
         dmMsg(4, "Trying to determine file format by extension.\n");
         if (dext)
         {
-            dmGetFormatByExt(dext + 1, &optInFormat, &optInSubFormat);
+            if (!dmGetFormatByExt(dext + 1, &optInFormat, &optInSubFormat))
+                dmGetC64FormatByExt(dext + 1, &optInFormat, &optInSubFormat);
         }
     }