diff --git a/app/core/gimpimage-guides.c b/app/core/gimpimage-guides.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpimage-guides.c
+++ b/app/core/gimpimage-guides.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/core/gimpimage-merge.c b/app/core/gimpimage-merge.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpimage-merge.c
+++ b/app/core/gimpimage-merge.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/core/gimpimage-projection.c b/app/core/gimpimage-projection.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpimage-projection.c
+++ b/app/core/gimpimage-projection.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/core/gimpimage-resize.c b/app/core/gimpimage-resize.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpimage-resize.c
+++ b/app/core/gimpimage-resize.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/core/gimpimage-scale.c b/app/core/gimpimage-scale.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpimage-scale.c
+++ b/app/core/gimpimage-scale.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/core/gimpprojection-construct.c b/app/core/gimpprojection-construct.c
index 440bd4796c..5d35b764ca 100644
--- a/app/core/gimpprojection-construct.c
+++ b/app/core/gimpprojection-construct.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */
diff --git a/app/gimpimage.c b/app/gimpimage.c
index 440bd4796c..5d35b764ca 100644
--- a/app/gimpimage.c
+++ b/app/gimpimage.c
@@ -1102,7 +1102,7 @@ gimp_image_construct_layers (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_l on layerless image.");
+      /*      g_warning("g_i_c_l on layerless image."); */
     }
 
   /* Note added by Raph Levien, 27 Jan 1998
@@ -1228,7 +1228,7 @@ gimp_image_construct_channels (GimpImage *gimage, int x, int y, int w, int h)
 
   if (!list)
     {
-      //      g_warning("g_i_c_c on channelless image.");
+      /*      g_warning("g_i_c_c on channelless image."); */
     }
 
   /*  reverse the channel list  */