diff --git a/test/erl/Makefile b/test/erl/Makefile
index 017cdc1..42572d2 100644
--- a/test/erl/Makefile
+++ b/test/erl/Makefile
@@ -7,7 +7,7 @@
 TARGETDIR=ebin
 SRCDIR=src
 
-ALL_INCLUDEDIR=$(GEN_INCLUDEDIR) $(INCLUDEDIR) ../../lib/erl/include
+ALL_INCLUDEDIR=$(GEN_INCLUDEDIR) $(INCLUDEDIR) ../../lib/alterl/include
 INCLUDEFLAGS=$(patsubst %,-I%, ${ALL_INCLUDEDIR})
 
 MODULES = stress_server test_server