diff --git a/src/include/ngspice/Makefile.am b/src/include/ngspice/Makefile.am
index 545dc9b13..1da9fd027 100644
--- a/src/include/ngspice/Makefile.am
+++ b/src/include/ngspice/Makefile.am
@@ -129,7 +129,7 @@ pkginclude_HEADERS = \
 
 
 if RELAN_WANTED
-include_HEADERS += \
+pkginclude_HEADERS += \
 	relandefs.h
 endif