diff --git a/sci-libs/armadillo/armadillo-8.300.2.recipe b/sci-libs/armadillo/armadillo-8.300.2.recipe
index 8bf59eab9..0aa60d2e1 100644
--- a/sci-libs/armadillo/armadillo-8.300.2.recipe
+++ b/sci-libs/armadillo/armadillo-8.300.2.recipe
@@ -9,7 +9,7 @@ COPYRIGHT="2008-2017 Conrad Sanderson
 	2017 Arroyo Consortium
 	2017 Data61, CSIRO"
 LICENSE="Apache v2"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://downloads.sourceforge.net/arma/armadillo-$portVersion.tar.xz"
 CHECKSUM_SHA256="b41886f4b4ec8eab2b97088834974e5479f2e2075e01859832d6516db77e655f"
 
@@ -52,6 +52,7 @@ BUILD_PREREQUIRES="
 	cmd:make
 	cmd:pkg_config$secondaryArchSuffix
 	cmd:strip$secondaryArchSuffix
+	cmd:sed
 	"
 
 BUILD()
@@ -81,6 +82,9 @@ INSTALL()
 
 	prepareInstalledDevelLib libarmadillo
 
+	sed  -i "1i prefix=$prefix" \
+		$libDir/pkgconfig/armadillo.pc
+
 	fixPkgconfig
 
 	packageEntries devel \