diff --git a/src/company_base.h b/src/company_base.h
index 24f9051fc2..810c6c90d3 100644
--- a/src/company_base.h
+++ b/src/company_base.h
@@ -131,7 +131,7 @@ struct CompanyProperties {
 };
 
 struct Company : CompanyProperties, CompanyPool::PoolItem<&_company_pool> {
-	Company(uint16_t name_1 = 0, bool is_ai = false);
+	Company(StringID name_1 = STR_NULL, bool is_ai = false);
 	~Company();
 
 	RailTypes avail_railtypes;         ///< Rail types available to this company.
diff --git a/src/company_cmd.cpp b/src/company_cmd.cpp
index 7f37cc585e..91e2cd70a9 100644
--- a/src/company_cmd.cpp
+++ b/src/company_cmd.cpp
@@ -63,7 +63,7 @@ INSTANTIATE_POOL_METHODS(Company)
  * @param name_1 Name of the company.
  * @param is_ai  A computer program is running for this company.
  */
-Company::Company(uint16_t name_1, bool is_ai)
+Company::Company(StringID name_1, bool is_ai)
 {
 	this->name_1 = name_1;
 	this->location_of_HQ = INVALID_TILE;
diff --git a/src/saveload/oldloader_sl.cpp b/src/saveload/oldloader_sl.cpp
index a8b7a452e4..fa77ca7df6 100644
--- a/src/saveload/oldloader_sl.cpp
+++ b/src/saveload/oldloader_sl.cpp
@@ -1025,7 +1025,7 @@ static bool LoadOldCompany(LoadgameState *ls, int num)
 
 		if (num == 0) {
 			/* If the first company has no name, make sure we call it UNNAMED */
-			if (c->name_1 == 0) {
+			if (c->name_1 == STR_NULL) {
 				c->name_1 = STR_SV_UNNAMED;
 			}
 		} else {