diff --git a/gfx/qcms/qcmsint.h b/gfx/qcms/qcmsint.h
index 0fb02e2ba01..68bbe21dcd0 100644
--- a/gfx/qcms/qcmsint.h
+++ b/gfx/qcms/qcmsint.h
@@ -86,8 +86,9 @@ struct lutType {
 	uint16_t *output_table;
 };
 #if 0
-this is from an intial idea of having the struct correspond to the data in
-the file. I decided that it wasn't a good idea.
+/* this is from an intial idea of having the struct correspond to the data in
+ * the file. I decided that it wasn't a good idea.
+ */
 struct tag_value {
 	uint32_t type;
 	union {
diff --git a/modules/libpr0n/decoders/jpeg/nsJPEGDecoder.cpp b/modules/libpr0n/decoders/jpeg/nsJPEGDecoder.cpp
index ecaa09a0973..1a3b40596d3 100644
--- a/modules/libpr0n/decoders/jpeg/nsJPEGDecoder.cpp
+++ b/modules/libpr0n/decoders/jpeg/nsJPEGDecoder.cpp
@@ -393,9 +393,10 @@ nsresult nsJPEGDecoder::ProcessData(const char *data, PRUint32 count, PRUint32 *
           return NS_ERROR_UNEXPECTED;
         }
 #if 0
-	We don't currently support CMYK profiles. The following
-	code dealt with lcms types. Add something like this
-	back when we gain support for CMYK.
+        /* We don't currently support CMYK profiles. The following
+         * code dealt with lcms types. Add something like this
+         * back when we gain support for CMYK.
+         */
         /* Adobe Photoshop writes YCCK/CMYK files with inverted data */
         if (mInfo.out_color_space == JCS_CMYK)
           type |= FLAVOR_SH(mInfo.saw_Adobe_marker ? 1 : 0);