test: Fix stivale include path
diff --git a/test/GNUmakefile b/test/GNUmakefile
index a413cbaa..07fe0d0e 100644
--- a/test/GNUmakefile
+++ b/test/GNUmakefile
@@ -39,7 +39,7 @@ override INTERNALCFLAGS := \
-fpie \
-mgeneral-regs-only \
-mno-red-zone \
- -Istivale \
+ -I../stivale \
-I. \
-I..
