diff --git a/src/test/run-make-fulldeps/coverage-spanview-base/Makefile b/src/test/run-make-fulldeps/coverage-spanview-base/Makefile
index ec93ca4725e..3160fd6c05a 100644
--- a/src/test/run-make-fulldeps/coverage-spanview-base/Makefile
+++ b/src/test/run-make-fulldeps/coverage-spanview-base/Makefile
@@ -35,7 +35,7 @@ endif
 		echo $$file; \
 		urlescaped="$$("$(PYTHON)" $(BASEDIR)/escape_url.py $$file)" || exit $$?; \
 		echo $$urlescaped; \
-		sed -i '1a\
+		sed -i -e '1a\
 <!--\
 \
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