diff --git a/src/openrct2/actions/RideCreateAction.hpp b/src/openrct2/actions/RideCreateAction.hpp
index 7aeabd7727..aae4a54dfb 100644
--- a/src/openrct2/actions/RideCreateAction.hpp
+++ b/src/openrct2/actions/RideCreateAction.hpp
@@ -38,7 +38,7 @@ struct RideCreateGameActionResult : public GameActionResult
     RideCreateGameActionResult() : GameActionResult(GA_ERROR::OK, 0) {}
     RideCreateGameActionResult(GA_ERROR error, rct_string_id message) : GameActionResult(error, message) {}
 
-    sint32 rideIndex;
+    sint32 rideIndex = -1;
 };
 
 struct RideCreateAction : public GameActionBase<GAME_COMMAND_CREATE_RIDE, RideCreateGameActionResult>
diff --git a/src/openrct2/network/network.h b/src/openrct2/network/network.h
index a301469723..5424ab2934 100644
--- a/src/openrct2/network/network.h
+++ b/src/openrct2/network/network.h
@@ -214,12 +214,12 @@ private:
         {
         }
 
-        uint32 tick;
-        uint32 eax, ebx, ecx, edx, esi, edi, ebp;
+        uint32 tick = 0;
+        uint32 eax = 0, ebx = 0, ecx = 0, edx = 0, esi = 0, edi = 0, ebp = 0;
         GameAction::Ptr action;
-        uint8 playerid;
-        uint8 callback;
-        uint32 commandIndex;
+        uint8 playerid = 0;
+        uint8 callback = 0;
+        uint32 commandIndex = 0;
         bool operator<(const GameCommand& comp) const {
             return tick < comp.tick && commandIndex < comp.commandIndex;
         }