diff --git a/liblo.pc.in b/liblo.pc.in
index 1adfa94..cf62474 100644
--- a/liblo.pc.in
+++ b/liblo.pc.in
@@ -6,5 +6,5 @@ includedir=@includedir@
 Name: liblo
 Version: @PACKAGE_VERSION@
 Description: A lightweight OSC server/client library
-Libs: -L${libdir} -llo @LIBPTHREAD@ @extralibs@
+Libs: -L${libdir} -llo @LIBPTHREAD@ @extralibs@ -lm
 Cflags: -I${includedir}