diff --git a/configure.in b/configure.in
index 8f5bc1d54f..2b01a2f589 100644
--- a/configure.in
+++ b/configure.in
@@ -2852,9 +2852,11 @@ AC_CONFIG_FILES(Makefile, [{
 	    echo 'distclean-local::; @$(RM) GNUmakefile uncommon.mk'
 	fi
     } > confmk$$.tmp && mv -f confmk$$.tmp Makefile &&
+    {
 	grep '^ruby:' Makefile > /dev/null ||
 	${MAKE-make} info-program | grep '^PROGRAM=ruby$' > /dev/null ||
-	echo 'ruby: $(PROGRAM);' >> Makefile],
+	echo 'ruby: $(PROGRAM);' >> Makefile
+    }],
 [EXEEXT='$EXEEXT' gnumake='$gnumake'])
 
 ruby_pc="${RUBY_BASE_NAME}-${MAJOR}.${MINOR}.pc"