diff --git a/AdvancedSessions/Source/AdvancedSessions/AdvancedSessions.Build.cs b/AdvancedSessions/Source/AdvancedSessions/AdvancedSessions.Build.cs
index 256e0bc..0da5a42 100644
--- a/AdvancedSessions/Source/AdvancedSessions/AdvancedSessions.Build.cs
+++ b/AdvancedSessions/Source/AdvancedSessions/AdvancedSessions.Build.cs
@@ -8,7 +8,7 @@ public class AdvancedSessions : ModuleRules
         PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
         //bEnforceIWYU = true;
 
-        Definitions.Add("WITH_ADVANCED_SESSIONS=1");
+        PublicDefinitions.Add("WITH_ADVANCED_SESSIONS=1");
 
         PrivateIncludePaths.AddRange(new string[] { "AdvancedSessions/Private"/*, "OnlineSubsystemSteam/Private"*/ });
         PublicIncludePaths.AddRange(new string[] { "AdvancedSessions/Public" });
diff --git a/AdvancedSteamSessions/Source/AdvancedSteamSessions/AdvancedSteamSessions.Build.cs b/AdvancedSteamSessions/Source/AdvancedSteamSessions/AdvancedSteamSessions.Build.cs
index db5bc57..a5d9794 100644
--- a/AdvancedSteamSessions/Source/AdvancedSteamSessions/AdvancedSteamSessions.Build.cs
+++ b/AdvancedSteamSessions/Source/AdvancedSteamSessions/AdvancedSteamSessions.Build.cs
@@ -8,7 +8,7 @@ public class AdvancedSteamSessions : ModuleRules
         PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
         //bEnforceIWYU = true;
 
-        Definitions.Add("WITH_ADVANCED_STEAM_SESSIONS=1");
+        PublicDefinitions.Add("WITH_ADVANCED_STEAM_SESSIONS=1");
 
         PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "OnlineSubsystem", "CoreUObject", "OnlineSubsystemUtils", "Networking", "Sockets", "AdvancedSessions"/*"Voice", "OnlineSubsystemSteam"*/ });
         PrivateDependencyModuleNames.AddRange(new string[] { "OnlineSubsystem", "Sockets", "Networking", "OnlineSubsystemUtils" /*"Voice", "Steamworks","OnlineSubsystemSteam"*/});