diff --git a/src/php/ext/grpc/server.c b/src/php/ext/grpc/server.c
index 2217a4f9a81ba834ed7c8d6157c2f85d700224ce..adcc982e593e16c9b8b6ae67706e1f511da3a31a 100644
--- a/src/php/ext/grpc/server.c
+++ b/src/php/ext/grpc/server.c
@@ -149,8 +149,12 @@ PHP_METHOD(Server, requestCall) {
                          1 TSRMLS_CC);
     goto cleanup;
   }
-  php_grpc_add_property_string(result, "method", details.method, true);
-  php_grpc_add_property_string(result, "host", details.host, true);
+  char *method_text = grpc_slice_as_c_string(details.method);
+  char *host_text = grpc_slice_as_c_string(details.host);
+  php_grpc_add_property_string(result, "method", method_text, true);
+  php_grpc_add_property_string(result, "host", host_text, true);
+  gpr_free(method_text);
+  gpr_free(host_text);
 #if PHP_MAJOR_VERSION < 7
   add_property_zval(result, "call", grpc_php_wrap_call(call, true TSRMLS_CC));
   add_property_zval(result, "absolute_deadline",