diff --git a/app/gimp-log.c b/app/gimp-log.c
index b5cb955aed..1ffcf386b3 100644
--- a/app/gimp-log.c
+++ b/app/gimp-log.c
@@ -43,7 +43,8 @@ gimp_log_init (void)
         { "save-dialog",    GIMP_LOG_SAVE_DIALOG    },
         { "image-scale",    GIMP_LOG_IMAGE_SCALE    },
         { "shadow-tiles",   GIMP_LOG_SHADOW_TILES   },
-        { "scale",          GIMP_LOG_SCALE          }
+        { "scale",          GIMP_LOG_SCALE          },
+        { "wm",             GIMP_LOG_WM             }
       };
 
       /*  g_parse_debug_string() has special treatment of the string 'help',
diff --git a/app/gimp-log.h b/app/gimp-log.h
index 22ae01549e..eecdb5f215 100644
--- a/app/gimp-log.h
+++ b/app/gimp-log.h
@@ -30,7 +30,8 @@ typedef enum
   GIMP_LOG_SAVE_DIALOG    = 1 << 6,
   GIMP_LOG_IMAGE_SCALE    = 1 << 7,
   GIMP_LOG_SHADOW_TILES   = 1 << 8,
-  GIMP_LOG_SCALE          = 1 << 9
+  GIMP_LOG_SCALE          = 1 << 9,
+  GIMP_LOG_WM             = 1 << 10
 } GimpLogFlags;
 
 
@@ -81,6 +82,7 @@ void   gimp_logv     (const gchar *function,
 #define IMAGE_SCALE    GIMP_LOG_IMAGE_SCALE
 #define SHADOW_TILES   GIMP_LOG_SHADOW_TILES
 #define SCALE          GIMP_LOG_SCALE
+#define WM             GIMP_LOG_WM
 
 #if 0 /* last resort */
 #  define GIMP_LOG /* nothing => no varargs, no log */