diff --git a/common.mk b/common.mk
index f359abd68e..635d125c60 100644
--- a/common.mk
+++ b/common.mk
@@ -1671,7 +1671,7 @@ marshal.$(OBJEXT): {$(VPATH)}config.h
 marshal.$(OBJEXT): {$(VPATH)}defines.h
 marshal.$(OBJEXT): {$(VPATH)}encoding.h
 marshal.$(OBJEXT): {$(VPATH)}id_table.h
-marshal.$(OBJEXT): {$(VPATH)}intern.h 
+marshal.$(OBJEXT): {$(VPATH)}intern.h
 marshal.$(OBJEXT): {$(VPATH)}internal.h
 marshal.$(OBJEXT): {$(VPATH)}io.h
 marshal.$(OBJEXT): {$(VPATH)}marshal.c