diff --git a/pki/domain/dockerCompose/config_test.go b/pki/domain/dockerCompose/config_test.go
index 3a01a2e..4782118 100644
--- a/pki/domain/dockerCompose/config_test.go
+++ b/pki/domain/dockerCompose/config_test.go
@@ -316,3 +316,51 @@ func TestServiceULimitsNoFile_Equal(t *testing.T) {
 		require.Equal(testCase.expectedResult, testCase.equalableA.Equal(testCase.equalableB), "Failed test case %v", i)
 	}
 }
+
+func TestVolume_Equal(t *testing.T) {
+	require := require.New(t)
+
+	testCases := []struct {
+		equalableA     dockerCompose.Equalable
+		equalableB     dockerCompose.Equalable
+		expectedResult bool
+	}{
+		{
+			equalableA:     &dockerCompose.Volume{},
+			equalableB:     &dockerCompose.NetworkIPAM{},
+			expectedResult: false,
+		},
+		{
+			equalableA:     &dockerCompose.Volume{},
+			equalableB:     nil,
+			expectedResult: false,
+		},
+		{
+			equalableA:     dockerCompose.NewVolume(),
+			equalableB:     dockerCompose.NewVolume(),
+			expectedResult: true,
+		},
+		{
+			equalableA: &dockerCompose.Volume{
+				External: true,
+			},
+			equalableB: &dockerCompose.Volume{
+				External: false,
+			},
+			expectedResult: false,
+		},
+		{
+			equalableA: &dockerCompose.Volume{
+				External: true,
+			},
+			equalableB: &dockerCompose.Volume{
+				External: true,
+			},
+			expectedResult: true,
+		},
+	}
+
+	for i, testCase := range testCases {
+		require.Equal(testCase.expectedResult, testCase.equalableA.Equal(testCase.equalableB), "Failed test case %v", i)
+	}
+}