diff --git a/gnustep-make.spec b/gnustep-make.spec
index c9599265..bcbbcd9f 100644
--- a/gnustep-make.spec
+++ b/gnustep-make.spec
@@ -67,6 +67,7 @@ OBJCFLAGS="%optflags"
 export OBJCFLAGS="$OBJCFLAGS -DGNUSTEP -DGNU_RUNTIME"
 export CFLAGS="%optflags"
 export CXXFLAGS="%optflags"
+export SHELLPROG="/bin/bash"
 %autoreconf
 %configure \
 	--libexecdir=%_libdir \