diff --git a/src/loadsave.c b/src/loadsave.c
index 1eb8d96d..0bb93712 100644
--- a/src/loadsave.c
+++ b/src/loadsave.c
@@ -89,7 +89,8 @@ void Load_Recoil_Image(T_IO_Context *);
 const T_Format File_formats[] = {
   {FORMAT_ALL_IMAGES, "(all)", NULL, NULL, NULL, 0, 0, 0, "",
     "gif;png;bmp;2bp;pcx;pkm;iff;lbm;ilbm;sham;ham;ham6;ham8;acbm;pic;anim;img;sci;scq;scf;scn;sco;pi1;pc1;cel;neo;"
-    "c64;p64;a64;pi;rp;aas;art;dd;iph;hpc;koa;koala;fli;bml;cdu;prg;tga;pnm;xpm;xcf;jpg;jpeg;tif;tiff;ico;ic2;cur;cm5;pph;info;flc"},
+    "c64;p64;a64;pi;rp;aas;art;dd;iph;ipt;hpc;ocp;koa;koala;fli;"
+    "bml;cdu;prg;tga;pnm;xpm;xcf;jpg;jpeg;tif;tiff;ico;ic2;cur;cm5;pph;info;flc"},
   {FORMAT_ALL_PALETTES, "(pal)", NULL, NULL, NULL, 1, 0, 0, "", "kcf;pal;gpl"},
   {FORMAT_ALL_FILES, "(*.*)", NULL, NULL, NULL, 0, 0, 0, "", "*"},
   {FORMAT_GIF, " gif", Test_GIF, Load_GIF, Save_GIF, 0, 1, 1, "gif", "gif"},
@@ -111,7 +112,7 @@ const T_Format File_formats[] = {
   {FORMAT_KCF, " kcf", Test_KCF, Load_KCF, Save_KCF, 1, 0, 0, "kcf", "kcf"},
   {FORMAT_PAL, " pal", Test_PAL, Load_PAL, Save_PAL, 1, 0, 0, "pal", "pal"},
   {FORMAT_GPL, " gpl", Test_GPL, Load_GPL, Save_GPL, 1, 0, 0, "gpl", "gpl"},
-  {FORMAT_C64, " c64", Test_C64, Load_C64, Save_C64, 0, 1, 0, "c64", "c64;p64;a64;pi;rp;aas;art;dd;iph;hpc;koa;koala;fli;bml;cdu;prg"},
+  {FORMAT_C64, " c64", Test_C64, Load_C64, Save_C64, 0, 1, 0, "c64", "c64;p64;a64;pi;rp;aas;art;dd;iph;ipt;hpc;ocp;koa;koala;fli;bml;cdu;prg"},
   {FORMAT_SCR, " cpc", NULL,     NULL,     Save_SCR, 0, 0, 0, "cpc", "cpc;scr"},
   {FORMAT_CM5, " cm5", Test_CM5, Load_CM5, Save_CM5, 0, 0, 1, "cm5", "cm5"},
   {FORMAT_PPH, " pph", Test_PPH, Load_PPH, Save_PPH, 0, 0, 1, "pph", "pph"},
diff --git a/src/miscfileformats.c b/src/miscfileformats.c
index bc15d595..c27eb2da 100644
--- a/src/miscfileformats.c
+++ b/src/miscfileformats.c
@@ -2261,7 +2261,10 @@ void Test_C64(T_IO_Context * context, FILE * file)
     case 9218:
       // $5C00 => Doodle
     case 10003: // multicolor + loadaddr
+      // $4000 => InterPaint multicolor
       // $6000 => Koala Painter
+    case 10018:
+      // $2000 => Advanced Art Studio
     case 10050:
       // $1800 => Picasso64
       File_error = 0;
@@ -2539,6 +2542,7 @@ void Load_C64(T_IO_Context * context)
             case 9218:  // Doodle
             case 10001: // multicolor
             case 10003: // multicolor + loadaddr
+            case 10018: // Advanced Art Studio + loadaddr
             case 10050: // Picasso64 + loadaddr
             case 10242: // Artist64 or blazing paddle + Loadaddr
             case 10277: // multicolor CDU-Paint + loadaddr
@@ -2645,6 +2649,17 @@ void Load_C64(T_IO_Context * context)
                 background=file_buffer+10002; // only 1
                 break;
 
+            case 10018: // Advanced Art Studio (.ocp) + loadaddr
+                hasLoadAddr=1;
+                loadFormat=F_multi;
+                context->Ratio = PIXEL_WIDE;
+                bitmap=file_buffer+2; // length: 8000
+                screen_ram=file_buffer+8000+2; // length: 1000
+                color_ram=file_buffer+9016+2; // length: 1000
+                // filebuffer+9000+2 is border
+                background=file_buffer+9001+2; // only 1
+                break;
+
             case 10050: // Picasso64 multicolor + loadaddr
                 hasLoadAddr=1;
                 loadFormat=F_multi;