diff --git a/libcoap-1.pc.in b/libcoap-1.pc.in
index f8c960c129..723e9a167e 100644
--- a/libcoap-1.pc.in
+++ b/libcoap-1.pc.in
@@ -7,5 +7,5 @@ Name: @PACKAGE_NAME@
 Description: C-Implementation of CoAP.
 Version: @PACKAGE_VERSION@
 URL: @PACKAGE_URL@
-Libs: -L${libdir} -lcoap-@LIBCOAP_API_VERSION@
-Cflags: -I${includedir}
+Libs: -L${libdir} -lcoap-@LIBCOAP_API_VERSION@ @DTLS_LIBS@
+Cflags: -I${includedir} @DTLS_CFLAGS@