diff --git a/tests/regress.sh b/tests/regress.sh
index 29295aa..3017beb 100755
--- a/tests/regress.sh
+++ b/tests/regress.sh
@@ -8,6 +8,7 @@ tests_init \
 	depgraph_break_2 \
 	depgraph_break_3 \
 	define_variable \
+	define_variable_override \
 	variable \
 	keep_system_libs \
 	libs \
@@ -72,6 +73,13 @@ define_variable_body()
 		pkgconf --variable=typelibdir --define-variable='libdir=\${libdir}' typelibdir
 }
 
+define_variable_override_body()
+{
+	export PKG_CONFIG_PATH="${selfdir}/lib1"
+	atf_check -o inline:"/test\n" \
+		pkgconf --variable=prefix --define-variable='prefix=/test' typelibdir
+}
+
 variable_body()
 {
 	export PKG_CONFIG_PATH="${selfdir}/lib1"