diff --git a/development/ex-vi/ex-vi.SlackBuild b/development/ex-vi/ex-vi.SlackBuild
index af648e2207..724f4a9855 100644
--- a/development/ex-vi/ex-vi.SlackBuild
+++ b/development/ex-vi/ex-vi.SlackBuild
@@ -92,7 +92,7 @@ sed -i -e "/^#define/s,\\(TUBESIZE *\\).*$,\\1 $(( TUBECOLS * TUBELINES ))," \
 # To avoid conflicts with Slackware's elvis and/or vim, we install to /opt and
 # include a login script to set PATH and MANPATH.
 make -j1 all install \
-  CC="gcc $SLKCFLAGS" \
+  RPMCFLAGS="$SLKCFLAGS" \
   MANDIR=/opt/$PRGNAM/man \
   PREFIX=/opt/$PRGNAM \
   INSTALL=install \