diff --git a/misk-testing/src/main/kotlin/misk/web/WebTestClient.kt b/misk-testing/src/main/kotlin/misk/web/WebTestClient.kt
index a93cb677d94..a4b711d5291 100644
--- a/misk-testing/src/main/kotlin/misk/web/WebTestClient.kt
+++ b/misk-testing/src/main/kotlin/misk/web/WebTestClient.kt
@@ -9,6 +9,7 @@ import okhttp3.Request
 import okhttp3.RequestBody.Companion.toRequestBody
 import okhttp3.Response
 import jakarta.inject.Inject
+import okhttp3.HttpUrl.Companion.toHttpUrl
 import kotlin.reflect.KClass
 
 /**
@@ -55,11 +56,13 @@ class WebTestClient @Inject constructor(
    * Performs a call to the started service. Allows the caller to customize the action before it's
    * sent through.
    */
-  fun call(path: String, action: Request.Builder.() -> Unit): WebTestResponse =
-    Request.Builder()
-      .url(jettyService.httpServerUrl.newBuilder().encodedPath(path).build())
+  fun call(path: String, action: Request.Builder.() -> Unit): WebTestResponse {
+    val fullUrl = jettyService.httpServerUrl.toUrl().toString() + path.trimStart('/')
+    return Request.Builder()
+      .url(fullUrl.toHttpUrl())
       .apply(action)
       .let { performRequest(it) }
+  }
 
   private fun performRequest(request: Request.Builder): WebTestResponse {
     request.header("Accept", MediaTypes.ALL)
diff --git a/misk-testing/src/test/kotlin/misk/web/WebTestClientTest.kt b/misk-testing/src/test/kotlin/misk/web/WebTestClientTest.kt
index e23e137f41e..fd8c84b08c9 100644
--- a/misk-testing/src/test/kotlin/misk/web/WebTestClientTest.kt
+++ b/misk-testing/src/test/kotlin/misk/web/WebTestClientTest.kt
@@ -22,6 +22,7 @@ class WebTestClientTest {
       install(WebServerTestingModule())
       install(MiskTestingServiceModule())
       install(WebActionModule.create<GetAction>())
+      install(WebActionModule.create<GetActionWithQueryParams>())
       install(WebActionModule.create<PostAction>())
     }
   }
@@ -34,6 +35,12 @@ class WebTestClientTest {
     fun get() = Packet("get")
   }
 
+  class GetActionWithQueryParams @Inject constructor() : WebAction {
+    @Get("/get/param")
+    @ResponseContentType(MediaTypes.APPLICATION_JSON)
+    fun get(@QueryParam paramKey:String) = Packet("get with param value: $paramKey")
+  }
+
   class PostAction @Inject constructor() : WebAction {
     @Post("/post")
     @RequestContentType(MediaTypes.APPLICATION_JSON)
@@ -50,6 +57,15 @@ class WebTestClientTest {
     ).isEqualTo(Packet("get"))
   }
 
+  @Test
+  fun `performs a GET with query param`() {
+    assertThat(
+      webTestClient
+        .get("/get/param?paramKey=test")
+        .parseJson<Packet>()
+    ).isEqualTo(Packet("get with param value: test"))
+  }
+
   @Test
   fun `performs a POST`() {
     assertThat(