diff --git a/src/Makefile.am b/src/Makefile.am
index 42e9f46..5ee1c66 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -2,7 +2,7 @@
 # Automake targets and declarations for ttyvaders
 ###############################################################################
 
-AM_CPPFLAGS = -I../libee
+AM_CPPFLAGS = -I$(top_srcdir)/libee
 
 if USE_SLANG
 LDFLAGS_slang = -lslang
diff --git a/test/Makefile.am b/test/Makefile.am
index 8d8bb0b..6be723f 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -2,7 +2,7 @@
 # Automake targets and declarations for libee tests
 ###############################################################################
 
-AM_CPPFLAGS = -I../libee
+AM_CPPFLAGS = -I$(top_srcdir)/libee
 
 if USE_SLANG
 LDFLAGS_slang = -lslang