diff --git a/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/SmithyGoDependency.java b/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/SmithyGoDependency.java
index d618dbc34..75cce524c 100644
--- a/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/SmithyGoDependency.java
+++ b/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/SmithyGoDependency.java
@@ -74,14 +74,10 @@ public final class SmithyGoDependency {
     public static final GoDependency SMITHY_ENDPOINTS = smithy("endpoints", "smithyendpoints");
     public static final GoDependency SMITHY_ENDPOINT_RULESFN = smithy("endpoints/private/rulesfn");
 
-    public static final GoDependency GO_CMP = goCmp("cmp");
-    public static final GoDependency GO_CMP_OPTIONS = goCmp("cmp/cmpopts");
-
     public static final GoDependency GO_JMESPATH = goJmespath(null);
     public static final GoDependency MATH = stdlib("math");
 
     private static final String SMITHY_SOURCE_PATH = "github.com/aws/smithy-go";
-    private static final String GO_CMP_SOURCE_PATH = "github.com/google/go-cmp";
     private static final String GO_JMESPATH_SOURCE_PATH = "github.com/jmespath/go-jmespath";
 
     private SmithyGoDependency() {
@@ -116,10 +112,6 @@ private static GoDependency smithy(String relativePath, String alias) {
         return relativePackage(SMITHY_SOURCE_PATH, relativePath, Versions.SMITHY_GO, alias);
     }
 
-    private static GoDependency goCmp(String relativePath) {
-        return relativePackage(GO_CMP_SOURCE_PATH, relativePath, Versions.GO_CMP, null);
-    }
-
     private static GoDependency goJmespath(String relativePath) {
         return relativePackage(GO_JMESPATH_SOURCE_PATH, relativePath, Versions.GO_JMESPATH, null);
     }
@@ -139,7 +131,6 @@ private static GoDependency relativePackage(
 
     private static final class Versions {
         private static final String GO_STDLIB = "1.15";
-        private static final String GO_CMP = "v0.5.4";
         private static final String SMITHY_GO = "v1.4.0";
         private static final String GO_JMESPATH = "v0.4.0";
     }
diff --git a/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/endpoints/EndpointTestsGenerator.java b/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/endpoints/EndpointTestsGenerator.java
index 751fc3297..2ed2fdca7 100644
--- a/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/endpoints/EndpointTestsGenerator.java
+++ b/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/endpoints/EndpointTestsGenerator.java
@@ -212,7 +212,6 @@ GoWriter.Writable generateExpectEndpoint(Optional<ExpectedEndpoint> expectEndpoi
                 commonCodegenArgs,
                 MapUtils.of(
                         "urlParse", SymbolUtils.createValueSymbolBuilder("Parse", SmithyGoDependency.NET_URL).build(),
-                        "cmpDiff", SymbolUtils.createPointableSymbolBuilder("Diff", SmithyGoDependency.GO_CMP).build(),
                         "expectURL", endpoint.getUrl(),
                         "headers", generateHeaders(endpoint.getHeaders()),
                         "properties", generateProperties(endpoint.getProperties()),
@@ -256,14 +255,10 @@ GoWriter.Writable generateHeaders(Map<String, List<String>> headers) {
 
     GoWriter.Writable generateAssertFields() {
         return goTemplate("""
-                if diff := $cmpDiff:T(expectEndpoint.Headers, result.Headers); diff != "" {
-                    t.Errorf("expect headers to match\\n%s", diff)
+                if !$T(expectEndpoint.Headers, result.Headers) {
+                    t.Errorf("expect headers to match\\n%v != %v", expectEndpoint.Headers, result.Headers)
                 }
-                """,
-                MapUtils.of(
-                        "cmpDiff", SymbolUtils.createPointableSymbolBuilder("Diff", SmithyGoDependency.GO_CMP).build(),
-                        "cmpAllowUnexported", SymbolUtils.createPointableSymbolBuilder("AllowUnexported",
-                                SmithyGoDependency.GO_CMP).build()));
+                """, SmithyGoDependency.REFLECT.valueSymbol("DeepEqual"));
     }
 
     GoWriter.Writable generateProperties(Map<String, Node> properties) {
@@ -357,16 +352,12 @@ public GoWriter.Writable stringNode(StringNode stringNode) {
 
     GoWriter.Writable generateAssertProperties() {
         return goTemplate("""
-                if diff := $cmpDiff:T(expectEndpoint.Properties, result.Properties,
-                    $cmpAllowUnexported:T($propertiesType:T{}),
-                ); diff != "" {
-                    t.Errorf("expect properties to match\\n%s", diff)
+                if !$reflectDeepEqual:T(expectEndpoint.Properties, result.Properties) {
+                    t.Errorf("expect properties to match\\n%v != %v", expectEndpoint.Properties, result.Properties)
                 }
                 """,
                 MapUtils.of(
-                        "cmpDiff", SymbolUtils.createPointableSymbolBuilder("Diff", SmithyGoDependency.GO_CMP).build(),
-                        "cmpAllowUnexported", SymbolUtils.createPointableSymbolBuilder("AllowUnexported",
-                                SmithyGoDependency.GO_CMP).build(),
+                        "reflectDeepEqual", SmithyGoDependency.REFLECT.valueSymbol("DeepEqual"),
                         "propertiesType", SymbolUtils.createValueSymbolBuilder("Properties",
                                 SmithyGoDependency.SMITHY).build()));