diff --git a/constraints.go b/constraints.go
index 547613f..9bb0dff 100644
--- a/constraints.go
+++ b/constraints.go
@@ -233,7 +233,7 @@ func parseConstraint(c string) (*constraint, error) {
 		patchDirty := false
 		dirty := false
 		if isX(m[3]) || m[3] == "" {
-			ver = "0.0.0"
+			ver = fmt.Sprintf("0.0.0%s", m[6])
 			dirty = true
 		} else if isX(strings.TrimPrefix(m[4], ".")) || m[4] == "" {
 			minorDirty = true
diff --git a/constraints_test.go b/constraints_test.go
index 0504399..34012af 100644
--- a/constraints_test.go
+++ b/constraints_test.go
@@ -121,6 +121,7 @@ func TestConstraintCheck(t *testing.T) {
 		{"*", "1", true},
 		{"*", "4.5.6", true},
 		{"*", "1.2.3-alpha.1", false},
+		{"*-0", "1.2.3-alpha.1", true},
 		{"2.*", "1", false},
 		{"2.*", "3.4.5", false},
 		{"2.*", "2.1.1", true},