diff --git a/layout/svg/base/src/nsASVGGraphicSource.h b/layout/svg/base/src/nsASVGGraphicSource.h
index 79200a9bca54..86b5e91036df 100644
--- a/layout/svg/base/src/nsASVGGraphicSource.h
+++ b/layout/svg/base/src/nsASVGGraphicSource.h
@@ -40,6 +40,7 @@
 #define __NS_ASVGGRAPHICSOURCE_H__
 
 #include "nscore.h"
+#include "nsDebug.h"
 
 class nsASVGPathBuilder;
 class nsIDOMSVGMatrix;
diff --git a/layout/svg/base/src/nsASVGPathBuilder.h b/layout/svg/base/src/nsASVGPathBuilder.h
index f2585ce63bbf..8b310f6f13f6 100644
--- a/layout/svg/base/src/nsASVGPathBuilder.h
+++ b/layout/svg/base/src/nsASVGPathBuilder.h
@@ -40,6 +40,7 @@
 #define __NS_ASVGPATHBUILDER_H__
 
 #include "nscore.h"
+#include "nsDebug.h"
 
 // abstract path builder 'interface' class.
 // XXX one day this will become a proper interface
diff --git a/layout/svg/base/src/nsSVGBPathBuilder.h b/layout/svg/base/src/nsSVGBPathBuilder.h
index 4afb5cd237f5..a16b7881f53a 100644
--- a/layout/svg/base/src/nsSVGBPathBuilder.h
+++ b/layout/svg/base/src/nsSVGBPathBuilder.h
@@ -40,6 +40,7 @@
 #define __NS_SVGBPATHBUILDER_H__
 
 #include "nscore.h"
+#include "nsDebug.h"
 #include "libart-incs.h"
 #include "nsASVGPathBuilder.h"