diff --git a/fluidlite.pc.in b/fluidlite.pc.in
index 33b41ca..6a689ef 100644
--- a/fluidlite.pc.in
+++ b/fluidlite.pc.in
@@ -10,4 +10,5 @@ Version: @fluidlite_VERSION@
 Libs: -L${libdir} -lfluidlite
 Libs.private: @PC_LIBS@
 Cflags: -I${includedir}
+Cflags.private: -DFLUIDLITE_STATIC
 Requires.private: @PC_REQUIRES@