diff --git a/Makefile b/Makefile
index 49c5b3d..33d9398 100644
--- a/Makefile
+++ b/Makefile
@@ -70,8 +70,8 @@ install:
 	mkdir -p "${DESTDIR}${PREFIX}"/bin
 	mkdir -p "${DESTDIR}${PREFIX}"/include/callisto
 	mkdir -p "${DESTDIR}${PREFIX}"/lib
-	cp -f ${HEADERS} "${DESTDIR}${PREFIX}"/include/callisto
-	cp -f csto "${DESTDIR}${PREFIX}"/bin
-	cp -f libcallisto.a "${DESTDIR}${PREFIX}"/lib
+	cp -f ${HEADERS} "${DESTDIR}${PREFIX}"/include/callisto/
+	cp -f csto "${DESTDIR}${PREFIX}"/bin/
+	cp -f libcallisto.a "${DESTDIR}${PREFIX}"/lib/
 
 .PHONY: all clean doc install