diff --git a/modules/openapi-generator/src/main/resources/go-server/controller-api.mustache b/modules/openapi-generator/src/main/resources/go-server/controller-api.mustache
index f26d4b44a2b6..ff5dd3cd863e 100644
--- a/modules/openapi-generator/src/main/resources/go-server/controller-api.mustache
+++ b/modules/openapi-generator/src/main/resources/go-server/controller-api.mustache
@@ -422,9 +422,9 @@ func (c *{{classname}}Controller) {{nickname}}(w http.ResponseWriter, r *http.Re
 	{{^isArray}}
 	{{^isDateTime}}
 	{{#defaultValue}}
-	{{paramName}}Param := "{{defaultValue}}"
+	{{paramName}}Param := getPointer("{{defaultValue}}")
 	if query.Has("{{baseName}}") {
-		{{paramName}}Param = {{^isString}}{{dataType}}( {{/isString}}query.Get("{{baseName}}"){{^isString}} ){{/isString}}
+		{{paramName}}Param = getPointer(query.Get("{{baseName}}"))
 	}
 	{{/defaultValue}}
 	{{^defaultValue}}
@@ -450,7 +450,7 @@ func (c *{{classname}}Controller) {{nickname}}(w http.ResponseWriter, r *http.Re
 		return
 	}
 	{{^isEnumRef}}
-	{{paramName}}Param := query.Get("{{baseName}}")
+	{{paramName}}Param := getPointer(query.Get("{{baseName}}"))
 	{{/isEnumRef}}
 	{{#isEnumRef}}
 	{{paramName}}Param, err := New{{dataType}}FromValue(query.Get("{{baseName}}"))
diff --git a/samples/openapi3/server/petstore/go/go-petstore/go/api_user.go b/samples/openapi3/server/petstore/go/go-petstore/go/api_user.go
index 0f6792356fb6..b32a110d44df 100644
--- a/samples/openapi3/server/petstore/go/go-petstore/go/api_user.go
+++ b/samples/openapi3/server/petstore/go/go-petstore/go/api_user.go
@@ -229,12 +229,12 @@ func (c *UserAPIController) LoginUser(w http.ResponseWriter, r *http.Request) {
 		c.errorHandler(w, r, &RequiredError{"username"}, nil)
 		return
 	}
-	usernameParam := query.Get("username")
+	usernameParam := getPointer(query.Get("username"))
 	if !query.Has("password"){
 		c.errorHandler(w, r, &RequiredError{"password"}, nil)
 		return
 	}
-	passwordParam := query.Get("password")
+	passwordParam := getPointer(query.Get("password"))
 	int32TestParam, err := parseNumericParameter[int32](
 		query.Get("int32_test"),
 		WithParse[int32](parseInt32),
diff --git a/samples/server/petstore/go-api-server/go/api_pet.go b/samples/server/petstore/go-api-server/go/api_pet.go
index 996f309cf99a..78361b1d29d3 100644
--- a/samples/server/petstore/go-api-server/go/api_pet.go
+++ b/samples/server/petstore/go-api-server/go/api_pet.go
@@ -254,9 +254,9 @@ func (c *PetAPIController) FindPetsByStatus(w http.ResponseWriter, r *http.Reque
 		c.errorHandler(w, r, &ParsingError{Param: "defaultNum", Err: err}, nil)
 		return
 	}
-	defaultStrParam := "default"
+	defaultStrParam := getPointer("default")
 	if query.Has("defaultStr") {
-		defaultStrParam = query.Get("defaultStr")
+		defaultStrParam = getPointer(query.Get("defaultStr"))
 	}
 	result, err := c.service.FindPetsByStatus(r.Context(), statusParam, inlineEnumPathParam, inlineEnumParam, defaultIntParam, defaultNumParam, defaultStrParam)
 	// If an error occurred, encode the error with the status code
diff --git a/samples/server/petstore/go-api-server/go/api_user.go b/samples/server/petstore/go-api-server/go/api_user.go
index 2f3e3b27d132..a816df034def 100644
--- a/samples/server/petstore/go-api-server/go/api_user.go
+++ b/samples/server/petstore/go-api-server/go/api_user.go
@@ -231,12 +231,12 @@ func (c *UserAPIController) LoginUser(w http.ResponseWriter, r *http.Request) {
 		c.errorHandler(w, r, &RequiredError{"username"}, nil)
 		return
 	}
-	usernameParam := query.Get("username")
+	usernameParam := getPointer(query.Get("username"))
 	if !query.Has("password"){
 		c.errorHandler(w, r, &RequiredError{"password"}, nil)
 		return
 	}
-	passwordParam := query.Get("password")
+	passwordParam := getPointer(query.Get("password"))
 	rememberMeParam, err := parseBoolParameter(
 		query.Get("remember_me"),
 		WithParse[bool](parseBool),
diff --git a/samples/server/petstore/go-chi-server/go/api_pet.go b/samples/server/petstore/go-chi-server/go/api_pet.go
index 9356dfdfb3df..75cf7f98e544 100644
--- a/samples/server/petstore/go-chi-server/go/api_pet.go
+++ b/samples/server/petstore/go-chi-server/go/api_pet.go
@@ -251,9 +251,9 @@ func (c *PetAPIController) FindPetsByStatus(w http.ResponseWriter, r *http.Reque
 		c.errorHandler(w, r, &ParsingError{Param: "defaultNum", Err: err}, nil)
 		return
 	}
-	defaultStrParam := "default"
+	defaultStrParam := getPointer("default")
 	if query.Has("defaultStr") {
-		defaultStrParam = query.Get("defaultStr")
+		defaultStrParam = getPointer(query.Get("defaultStr"))
 	}
 	result, err := c.service.FindPetsByStatus(r.Context(), statusParam, inlineEnumPathParam, inlineEnumParam, defaultIntParam, defaultNumParam, defaultStrParam)
 	// If an error occurred, encode the error with the status code
diff --git a/samples/server/petstore/go-chi-server/go/api_user.go b/samples/server/petstore/go-chi-server/go/api_user.go
index fb1baf2eb094..6f79270672ea 100644
--- a/samples/server/petstore/go-chi-server/go/api_user.go
+++ b/samples/server/petstore/go-chi-server/go/api_user.go
@@ -229,12 +229,12 @@ func (c *UserAPIController) LoginUser(w http.ResponseWriter, r *http.Request) {
 		c.errorHandler(w, r, &RequiredError{"username"}, nil)
 		return
 	}
-	usernameParam := query.Get("username")
+	usernameParam := getPointer(query.Get("username"))
 	if !query.Has("password"){
 		c.errorHandler(w, r, &RequiredError{"password"}, nil)
 		return
 	}
-	passwordParam := query.Get("password")
+	passwordParam := getPointer(query.Get("password"))
 	rememberMeParam, err := parseBoolParameter(
 		query.Get("remember_me"),
 		WithParse[bool](parseBool),