diff --git a/pkgs/development/libraries/armadillo/default.nix b/pkgs/development/libraries/armadillo/default.nix
index 62b5ddf8011a..77833131ebcd 100644
--- a/pkgs/development/libraries/armadillo/default.nix
+++ b/pkgs/development/libraries/armadillo/default.nix
@@ -13,7 +13,8 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DDETECT_HDF5=ON" ];
 
-  patches = [ ./use-unix-config-on-OS-X.patch ];
+  patches = [ ./use-unix-config-on-OS-X.patch
+              ./use-OpenBLAS-as-LAPACK.patch ];
   
   meta = with stdenv.lib; {
     description = "C++ linear algebra library";
diff --git a/pkgs/development/libraries/armadillo/use-OpenBLAS-as-LAPACK.patch b/pkgs/development/libraries/armadillo/use-OpenBLAS-as-LAPACK.patch
new file mode 100644
index 000000000000..e4c77d2cc2e3
--- /dev/null
+++ b/pkgs/development/libraries/armadillo/use-OpenBLAS-as-LAPACK.patch
@@ -0,0 +1,14 @@
+diff --git a/cmake_aux/Modules/ARMA_FindLAPACK.cmake b/cmake_aux/Modules/ARMA_FindLAPACK.cmake
+index 5395afb..a203c93 100644
+--- a/cmake_aux/Modules/ARMA_FindLAPACK.cmake
++++ b/cmake_aux/Modules/ARMA_FindLAPACK.cmake
+@@ -5,7 +5,7 @@
+ # also defined, but not for general use are
+ #  LAPACK_LIBRARY, where to find the LAPACK library.
+ 
+-SET(LAPACK_NAMES ${LAPACK_NAMES} lapack)
++SET(LAPACK_NAMES ${LAPACK_NAMES} openblas)
+ FIND_LIBRARY(LAPACK_LIBRARY
+   NAMES ${LAPACK_NAMES}
+   PATHS /usr/lib64/atlas /usr/lib/atlas /usr/lib64 /usr/lib /usr/local/lib64 /usr/local/lib
+