diff --git a/jack.pc.in b/jack.pc.in
index ec21bae..9c0c8f8 100644
--- a/jack.pc.in
+++ b/jack.pc.in
@@ -6,5 +6,5 @@ includedir=@includedir@
 Name: jack
 Description: the Jack Audio Connection Kit: a low-latency synchronous callback-based media server
 Version: @JACK_VERSION@
-Libs: -L${libdir} -ljack "@OS_LDFLAGS@"
+Libs: -L${libdir} -ljack -lpthread "@OS_LDFLAGS@"
 Cflags: -I${includedir}