diff --git a/src/game_interpreter.cpp b/src/game_interpreter.cpp
index c8799b43907..1d4e0c27232 100644
--- a/src/game_interpreter.cpp
+++ b/src/game_interpreter.cpp
@@ -2911,10 +2911,10 @@ bool Game_Interpreter::CommandKeyInputProc(lcf::rpg::EventCommand const& com) {
 		} else {
 			// For Rpg2k >=1.50
 			_keyinput.keys[Keys::eShift] = com.parameters[5] != 0;
-			_keyinput.keys[Keys::eDown] = param_size > 6 ? com.parameters[6] != 0 : false;
-			_keyinput.keys[Keys::eLeft] = param_size > 7 ? com.parameters[7] != 0 : false;
-			_keyinput.keys[Keys::eRight] = param_size > 8 ? com.parameters[8] != 0 : false;
-			_keyinput.keys[Keys::eUp] = param_size > 9 ? com.parameters[9] != 0 : false;
+			_keyinput.keys[Keys::eDown] = param_size > 6 && com.parameters[6] != 0;
+			_keyinput.keys[Keys::eLeft] = param_size > 7 && com.parameters[7] != 0;
+			_keyinput.keys[Keys::eRight] = param_size > 8 && com.parameters[8] != 0;
+			_keyinput.keys[Keys::eUp] = param_size > 9 && com.parameters[9] != 0;
 		}
 	} else {
 		if (param_size != 10 || Player::IsRPG2k3Legacy()) {
@@ -2925,17 +2925,17 @@ bool Game_Interpreter::CommandKeyInputProc(lcf::rpg::EventCommand const& com) {
 				_keyinput.keys[Keys::eRight] = true;
 				_keyinput.keys[Keys::eUp] = true;
 			}
-			_keyinput.keys[Keys::eNumbers] = param_size > 5 ? com.parameters[5] != 0 : false;
-			_keyinput.keys[Keys::eOperators] = param_size > 6 ? com.parameters[6] != 0 : false;
-			_keyinput.time_variable = param_size > 7 ? com.parameters[7] : false;
-			_keyinput.timed = param_size > 8 ? com.parameters[8] != 0 : false;
+			_keyinput.keys[Keys::eNumbers] = param_size > 5 && com.parameters[5] != 0;
+			_keyinput.keys[Keys::eOperators] = param_size > 6 && com.parameters[6] != 0;
+			_keyinput.time_variable = param_size > 7 && com.parameters[7];
+			_keyinput.timed = param_size > 8 && com.parameters[8] != 0;
 			if (param_size > 10 && Player::IsMajorUpdatedVersion()) {
 				// For Rpg2k3 >=1.05
 				_keyinput.keys[Keys::eShift] = com.parameters[9] != 0;
 				_keyinput.keys[Keys::eDown] = com.parameters[10] != 0;
-				_keyinput.keys[Keys::eLeft] = param_size > 11 ? com.parameters[11] != 0 : false;
-				_keyinput.keys[Keys::eRight] = param_size > 12 ? com.parameters[12] != 0 : false;
-				_keyinput.keys[Keys::eUp] = param_size > 13 ? com.parameters[13] != 0 : false;
+				_keyinput.keys[Keys::eLeft] = param_size > 11 && com.parameters[11] != 0;
+				_keyinput.keys[Keys::eRight] = param_size > 12 && com.parameters[12] != 0;
+				_keyinput.keys[Keys::eUp] = param_size > 13 && com.parameters[13] != 0;
 			}
 		} else {
 			// Since RPG2k3 1.05