diff --git a/include/wx/os2/setup0.h b/include/wx/os2/setup0.h
index 502d48dac5..12795aec32 100644
--- a/include/wx/os2/setup0.h
+++ b/include/wx/os2/setup0.h
@@ -247,7 +247,7 @@
                                   // Set to 1 for PNM format support
 #define wxUSE_PCX           1
                                   // Set to 1 for PCX format support
-#define wxUSE_IFF           0
+#define wxUSE_IFF           1
                                   // Set to 1 for IFF format support
 #define wxUSE_XPM           1
                                   // Set to 1 for XPM format support