diff --git a/mozilla/widget/src/build/Makefile.in b/mozilla/widget/src/build/Makefile.in
index fabc71ba209..8c62be6a1a4 100644
--- a/mozilla/widget/src/build/Makefile.in
+++ b/mozilla/widget/src/build/Makefile.in
@@ -91,7 +91,7 @@ EXTRA_DSO_LDOPTS = \
 
 include $(topsrcdir)/config/rules.mk
 
-DEFINES		+= -D_IMPL_NS_WIDGET -DMOZ_UNICODE -DMOZ_AIMM
+DEFINES		+= -D_IMPL_NS_WIDGET -DMOZ_UNICODE
 
 
 
diff --git a/mozilla/widget/src/windows/Makefile.in b/mozilla/widget/src/windows/Makefile.in
index baad5429dec..c152bcef745 100644
--- a/mozilla/widget/src/windows/Makefile.in
+++ b/mozilla/widget/src/windows/Makefile.in
@@ -92,7 +92,7 @@ CPPSRCS += \
 endif
 
 
-DEFINES		+= -D_IMPL_NS_WIDGET -DMOZ_AIMM -DMOZ_UNICODE 
+DEFINES		+= -D_IMPL_NS_WIDGET -DMOZ_UNICODE 
 
 ifdef BUILD_STATIC_LIBS
 DEFINES		+= -DMOZ_STATIC_COMPONENT_LIBS