diff --git a/tools/niminst/buildsh.nimf b/tools/niminst/buildsh.nimf
index 464c70abf3a4..5f1db9cd3cbf 100644
--- a/tools/niminst/buildsh.nimf
+++ b/tools/niminst/buildsh.nimf
@@ -192,8 +192,10 @@ case $ucpu in
     mycpu="powerpc64" ;;
   *power*|*ppc* )
     if [ "$myos" = "freebsd" ] ; then
-      COMP_FLAGS="$COMP_FLAGS -m64"
-      LINK_FLAGS="$LINK_FLAGS -m64"
+      if [ "$ucpu" != "powerpc" ] ; then
+        COMP_FLAGS="$COMP_FLAGS -m64"
+        LINK_FLAGS="$LINK_FLAGS -m64"
+      fi
       mycpu=`uname -p`
       case $mycpu in
         powerpc64le)