diff --git a/misc/armadillo.pc.in b/misc/armadillo.pc.in
index 27d35bb..1f079a5 100644
--- a/misc/armadillo.pc.in
+++ b/misc/armadillo.pc.in
@@ -7,3 +7,4 @@ URL: http://arma.sourceforge.net
 Version: @ARMA_VERSION_MAJOR@.@ARMA_VERSION_MINOR@.@ARMA_VERSION_PATCH@
 Cflags: -I${includedir}
 Libs: -L${libdir} -larmadillo
+Requires.private: @REQUIRES_PRIVATE@