--- a/tools/gfxconv.c	Mon May 27 08:35:35 2019 +0300
+++ b/tools/gfxconv.c	Mon May 27 10:47:46 2019 +0300
@@ -1945,10 +1945,6 @@
         argHandleOpt, argHandleFile, OPTH_BAILOUT))
         exit(1);
 
-    // Check character ROM filename
-    if (optCharROMFilename == NULL)
-        optCharROMFilename = DM_DEF_CHARGEN;
-
     // Determine input format, if not specified
     if (optInType == FFMT_AUTO && optInFilename != NULL)
     {
@@ -2152,15 +2148,19 @@
                 case FFMT_SPRITE:
                     // Set character data if required
                     if ((inC64Fmt->format->type & D64_FMT_CHAR) &&
-                        inC64Image->charData->data == NULL)
+                        inC64Image->charData[0].data == NULL)
                     {
+                        // Check character ROM filename
+                        if (optCharROMFilename == NULL)
+                            optCharROMFilename = DM_DEF_CHARGEN;
+
                         // Attempt to read character ROM
                         dmMsg(1, "Using character ROM file '%s'.\n",
                             optCharROMFilename);
 
                         if ((res = dmReadDataFile(NULL, optCharROMFilename,
-                            &inC64Image->charData->data,
-                            &inC64Image->charData->size)) != DMERR_OK)
+                            &inC64Image->charData[0].data,
+                            &inC64Image->charData[0].size)) != DMERR_OK)
                         {
                             dmErrorMsg("Could not read character ROM from '%s'.\n",
                                 optCharROMFilename);