diff --git a/libs/common/include/launchdarkly/config/shared/builders/http_properties_builder.hpp b/libs/common/include/launchdarkly/config/shared/builders/http_properties_builder.hpp
index a152d2828..afd83ff6e 100644
--- a/libs/common/include/launchdarkly/config/shared/builders/http_properties_builder.hpp
+++ b/libs/common/include/launchdarkly/config/shared/builders/http_properties_builder.hpp
@@ -201,7 +201,10 @@ class HttpPropertiesBuilder {
      */
     template <typename T = SDK,
               std::enable_if_t<std::is_same_v<T, ClientSDK>, int> = 0>
-    HttpPropertiesBuilder& HttpProxy(std::string http_proxy);
+    HttpPropertiesBuilder& HttpProxy(std::string http_proxy) {
+        http_proxy_ = std::move(http_proxy);
+        return *this;
+    }
 
     [[nodiscard]] built::HttpProperties Build() const;
 
diff --git a/libs/common/src/config/http_properties_builder.cpp b/libs/common/src/config/http_properties_builder.cpp
index 3fde4038b..f4081c3dc 100644
--- a/libs/common/src/config/http_properties_builder.cpp
+++ b/libs/common/src/config/http_properties_builder.cpp
@@ -121,14 +121,6 @@ HttpPropertiesBuilder<SDK>& HttpPropertiesBuilder<SDK>::Tls(
     return *this;
 }
 
-template <typename SDK>
-template <typename T, std::enable_if_t<std::is_same_v<T, ClientSDK>, int>>
-HttpPropertiesBuilder<SDK>& HttpPropertiesBuilder<SDK>::HttpProxy(
-    std::string http_proxy) {
-    http_proxy_ = std::move(http_proxy);
-    return *this;
-}
-
 static std::optional<std::string> HttpProxyFromEnv() {
     if (char const* http_proxy = std::getenv("http_proxy")) {
         if (strlen(http_proxy) > 0) {