diff --git a/configure b/configure
index 132f7d4700..42168b45da 100755
--- a/configure
+++ b/configure
@@ -18857,7 +18857,8 @@ SEARCH_INCLUDE="\
                               \
     /usr/openwin/share/include"
 
-SEARCH_LIB="`echo "$SEARCH_INCLUDE" | sed s/include/lib/g` "
+SEARCH_LIB="`echo "$SEARCH_INCLUDE" | sed s/include/lib/g` " \
+    /usr/lib64 /usr/X11R6/lib64
 
 
 cat >confcache <<\_ACEOF
diff --git a/configure.in b/configure.in
index d42426fc2d..ce69721f51 100644
--- a/configure.in
+++ b/configure.in
@@ -1810,7 +1810,9 @@ SEARCH_INCLUDE="\
                               \
     /usr/openwin/share/include"
 
-SEARCH_LIB="`echo "$SEARCH_INCLUDE" | sed s/include/lib/g` "
+dnl add 64 bit versions for Linux on AMD (this is not perfect but well...)
+SEARCH_LIB="`echo "$SEARCH_INCLUDE" | sed s/include/lib/g` " \
+    /usr/lib64 /usr/X11R6/lib64
 
 dnl ------------------------------------------------------------------------
 dnl Check for libraries