diff --git a/boilerplate/make-cairo-boilerplate-constructors.sh b/boilerplate/make-cairo-boilerplate-constructors.sh
index dd6311178..09716ca9e 100644
--- a/boilerplate/make-cairo-boilerplate-constructors.sh
+++ b/boilerplate/make-cairo-boilerplate-constructors.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-if test $# == 0; then
+if test $# -eq 0; then
     echo "$0: no input files." >&2
     exit 0
 fi
diff --git a/test/make-cairo-test-constructors.sh b/test/make-cairo-test-constructors.sh
index fdb84e9dc..cb1391e73 100644
--- a/test/make-cairo-test-constructors.sh
+++ b/test/make-cairo-test-constructors.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-if test $# == 0; then
+if test $# -eq 0; then
     echo "$0: no input files." >&2
     exit 0
 fi