diff --git a/include/Makefile.am b/include/Makefile.am
index aba50fe51..022c953c6 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -9,7 +9,7 @@ EXTRA_DIST = \
 incincdir = $(includedir)/valgrind
 
 incinc_HEADERS = \
-	basic_types.c \
+	basic_types.h \
 	tool.h \
 	tool_asm.h \
 	valgrind.h \