diff --git a/meson.build b/meson.build
index a59d91862..35026faac 100644
--- a/meson.build
+++ b/meson.build
@@ -191,6 +191,7 @@ versiondata.set('PIPEWIRE_VERSION_NANO', pipewire_version_nano)
 versiondata.set_quoted('PIPEWIRE_API_VERSION', apiversion)
 
 cdata = configuration_data()
+cdata.set_quoted('PREFIX', prefix)
 cdata.set_quoted('PIPEWIRE_CONFDATADIR', pipewire_confdatadir)
 cdata.set_quoted('LOCALEDIR', pipewire_localedir)
 cdata.set_quoted('LIBDIR', pipewire_libdir)
diff --git a/src/modules/module-jack-tunnel/weakjack.h b/src/modules/module-jack-tunnel/weakjack.h
index 460445e2a..f6f8a12f8 100644
--- a/src/modules/module-jack-tunnel/weakjack.h
+++ b/src/modules/module-jack-tunnel/weakjack.h
@@ -148,8 +148,8 @@ static inline int weakjack_load(struct weakjack *jack, const char *lib)
 
 		search_dirs = getenv("LIBJACK_PATH");
 		if (!search_dirs)
-			search_dirs = "/usr/lib64:/usr/lib/:" LIBDIR;
-
+			search_dirs = PREFIX "/lib64/:" PREFIX "/lib/:"
+				"/usr/lib64/:/usr/lib/:" LIBDIR;
 
 		while ((p = pw_split_walk(search_dirs, ":", &len, &state))) {
 			int pathlen;