diff --git a/config/grc_gr_uhd.m4 b/config/grc_gr_uhd.m4
index 090187c..a3d3aff 100644
--- a/config/grc_gr_uhd.m4
+++ b/config/grc_gr_uhd.m4
@@ -24,6 +24,8 @@ AC_DEFUN([GRC_GR_UHD],[
     GRC_CHECK_DEPENDENCY(gr-uhd, gnuradio-core)
 
     if test $passed = yes; then
+        dnl setup the pkg config path with uhd configuration variables
+        export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${prefix}/lib${LIB_SUFFIX}/pkgconfig
         dnl Don't do gr-uhd if the 'uhd' package is not installed
         PKG_CHECK_MODULES(
             [UHD], [uhd], [],