diff --git a/ffms2.pc.in b/ffms2.pc.in
index 7a2a35ee80..29a2386728 100644
--- a/ffms2.pc.in
+++ b/ffms2.pc.in
@@ -12,3 +12,4 @@ Version: @FFMS_VERSION@
 Libs.private: @ZLIB_LDFLAGS@ -lz
 Libs: -L${libdir} -lffms2
 Cflags: -I${includedir}
+Cflags.private: -DFFMS_STATIC