diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt
index 1ab282de32..89c82808a7 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt
@@ -772,8 +772,6 @@ class ServerProtocolTestGenerator(
             FailingTest(RestJson, "RestJsonEndpointTrait", TestType.Request),
             FailingTest(RestJson, "RestJsonEndpointTraitWithHostLabel", TestType.Request),
 
-            FailingTest(RestJson, "RestJsonWithBodyExpectsApplicationJsonContentType", TestType.MalformedRequest),
-
             // Tests involving `@range` on floats.
             // Pending resolution from the Smithy team, see https://github.com/awslabs/smithy-rs/issues/2007.
             FailingTest(RestJsonValidation, "RestJsonMalformedRangeFloat_case0", TestType.MalformedRequest),
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerHttpBoundProtocolGenerator.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerHttpBoundProtocolGenerator.kt
index ff7496b973..ffa5fb424f 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerHttpBoundProtocolGenerator.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerHttpBoundProtocolGenerator.kt
@@ -53,6 +53,7 @@ import software.amazon.smithy.rust.codegen.core.smithy.mapRustType
 import software.amazon.smithy.rust.codegen.core.smithy.protocols.HttpBindingDescriptor
 import software.amazon.smithy.rust.codegen.core.smithy.protocols.HttpBoundProtocolPayloadGenerator
 import software.amazon.smithy.rust.codegen.core.smithy.protocols.HttpLocation
+import software.amazon.smithy.rust.codegen.core.smithy.protocols.RestJson
 import software.amazon.smithy.rust.codegen.core.smithy.protocols.parse.StructuredDataParserGenerator
 import software.amazon.smithy.rust.codegen.core.smithy.traits.SyntheticInputTrait
 import software.amazon.smithy.rust.codegen.core.smithy.transformers.operationErrors
@@ -628,7 +629,20 @@ private class ServerHttpBoundProtocolTraitImplGenerator(
                 """
                 let bytes = #{Hyper}::body::to_bytes(body).await?;
                 if !bytes.is_empty() {
-                    input = #{parser}(bytes.as_ref(), input)?;
+                """,
+                *codegenScope,
+            )
+            if (protocol is RestJson) {
+                rustTemplate(
+                    """
+                    #{SmithyHttpServer}::protocols::content_type_header_classifier(&parts.headers, Some("application/json"))?;
+                    """,
+                    *codegenScope,
+                )
+            }
+            rustTemplate(
+                """
+                input = #{parser}(bytes.as_ref(), input)?;
                 }
                 """,
                 *codegenScope,