diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6595f0b..602656c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Version 4.5 (June 16, 2018)
+
+1. Bug fixes:
+
+- Fixed the gdb_enabledgamemodes and gdb_disabledgamemodes convars not working properly.
+
 ## Version 4.0 (June 13, 2018)
 
 1. Combined all different versions into 1 file.
diff --git a/README.md b/README.md
index f5f46a8..49bfb51 100644
--- a/README.md
+++ b/README.md
@@ -210,6 +210,7 @@ gdb_tactical "25"
 You must specify the game modes in the gdb_enabledgamemodes and gdb_disabledgamemodes convars.
 
 Here are some scenarios and their outcomes:
+
 - Scenario 1
 ```
 gdb_enabledgamemodes "" // The plugin is enabled in all game modes.
diff --git a/addons/sourcemod/plugins/gun_damage_booster.smx b/addons/sourcemod/plugins/gun_damage_booster.smx
index b32d6f8..c35329d 100644
Binary files a/addons/sourcemod/plugins/gun_damage_booster.smx and b/addons/sourcemod/plugins/gun_damage_booster.smx differ
diff --git a/addons/sourcemod/scripting/gun_damage_booster.sp b/addons/sourcemod/scripting/gun_damage_booster.sp
index 588ba34..cee0757 100644
--- a/addons/sourcemod/scripting/gun_damage_booster.sp
+++ b/addons/sourcemod/scripting/gun_damage_booster.sp
@@ -2,7 +2,7 @@
 #include <sdktools>
 #pragma semicolon 1
 #pragma newdecls required
-#define GDB_VERSION "4.0"
+#define GDB_VERSION "4.5"
 
 public Plugin myinfo =
 {
@@ -324,11 +324,7 @@ stock bool bIsSystemValid()
 	ExplodeString(sConVarModes, ",", sModeName, sizeof(sModeName), sizeof(sModeName[]));
 	for (int iMode = 0; iMode < sizeof(sModeName); iMode++)
 	{
-		if (StrContains(sGameMode, sModeName[iMode], false) == -1 && sModeName[iMode][0] != '\0')
-		{
-			return false;
-		}
-		else
+		if (StrContains(sGameMode, sModeName[iMode], false) != -1 && sModeName[iMode][0] != '\0')
 		{
 			return true;
 		}
@@ -337,14 +333,10 @@ stock bool bIsSystemValid()
 	ExplodeString(sConVarModes, ",", sModeName, sizeof(sModeName), sizeof(sModeName[]));
 	for (int iMode = 0; iMode < sizeof(sModeName); iMode++)
 	{
-		if (StrContains(sGameMode, sModeName[iMode], false) != -1 && sModeName[iMode][0] != '\0')
-		{
-			return false;
-		}
-		else
+		if (StrContains(sGameMode, sModeName[iMode], false) == -1 && sModeName[iMode][0] != '\0')
 		{
 			return true;
 		}
 	}
-	return true;
+	return false;
 }
\ No newline at end of file