diff --git a/usr/include/Makefile b/usr/include/Makefile
index 5bc0d566cfe0..ac206fb27c65 100644
--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -95,7 +95,7 @@ endif
 # asm-generic/*.h is used by asm/*.h, and should not be included directly
 no-header-test += asm-generic/%
 
-extra-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h' 2>/dev/null))
+always-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h' 2>/dev/null))
 
 # Include the header twice to detect missing include guard.
 quiet_cmd_hdrtest = HDRTEST $<