diff --git a/java/jacoco.go b/java/jacoco.go
index c4b3e6e..59f2fd3 100644
--- a/java/jacoco.go
+++ b/java/jacoco.go
@@ -76,7 +76,7 @@
 func jacocoFiltersToZipCommand(includes, excludes []string) string {
 	specs := ""
 	if len(excludes) > 0 {
-		specs += android.JoinWithPrefix(excludes, "-x") + " "
+		specs += android.JoinWithPrefix(excludes, "-x ") + " "
 	}
 	if len(includes) > 0 {
 		specs += strings.Join(includes, " ")
@@ -113,6 +113,8 @@
 		spec += "**/*.class"
 	} else if wildcard {
 		spec += "*.class"
+	} else {
+		spec += ".class"
 	}
 
 	return spec, nil
diff --git a/java/jacoco_test.go b/java/jacoco_test.go
index 8321017..6e8b026 100644
--- a/java/jacoco_test.go
+++ b/java/jacoco_test.go
@@ -21,6 +21,11 @@
 		name, in, out string
 	}{
 		{
+			name: "class",
+			in:   "package.Class",
+			out:  "package/Class.class",
+		},
+		{
 			name: "class wildcard",
 			in:   "package.Class*",
 			out:  "package/Class*.class",
@@ -71,6 +76,12 @@
 			includes: []string{"package/Class.class", "package2/Class.class"},
 			out:      "package/Class.class package2/Class.class",
 		},
+		{
+			name:     "excludes",
+			includes: []string{"package/**/*.class"},
+			excludes: []string{"package/Class.class"},
+			out:      "-x package/Class.class package/**/*.class",
+		},
 	}
 
 	for _, testCase := range testCases {