diff --git a/libhammer.pc.in b/libhammer.pc.in
index 97ded13f8806ab4e3146f9cb79924dfa52521cc7..ae716640eacebb4743fdc3fff0f01af36439d949 100644
--- a/libhammer.pc.in
+++ b/libhammer.pc.in
@@ -1,4 +1,4 @@
-prefix=/usr
+prefix=${prefix}
 exec_prefix=${prefix}
 includedir=${prefix}/include
 libdir=${exec_prefix}/lib