diff --git a/docs/release-notes.md b/docs/release-notes.md
index ba2fe46a..45670c29 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -3,6 +3,7 @@
 # Release notes
 ## Upcoming release
 * For players:
+  * Added friendly error when using SMAPI 3.2._x_ with Stardew Valley 1.5.5 or later.
   * Improved mod compatibility in 64-bit mode (thanks to spacechase0!).
   * Reducing load time when scanning/rewriting many mods for compatibility.
   * Updated compatibility list.
diff --git a/src/SMAPI.Installer/InteractiveInstaller.cs b/src/SMAPI.Installer/InteractiveInstaller.cs
index b91d0dd3..17c3198f 100644
--- a/src/SMAPI.Installer/InteractiveInstaller.cs
+++ b/src/SMAPI.Installer/InteractiveInstaller.cs
@@ -298,6 +298,14 @@ namespace StardewModdingApi.Installer
                 return;
             }
 
+            // not Stardew Valley 1.5.5+
+            if (File.Exists(Path.Combine(paths.GamePath, "Stardew Valley.dll")))
+            {
+                this.PrintError($"Oops! The detected game install path seems to be Stardew Valley 1.5.5 or later, but this version of SMAPI is only compatible up to Stardew Valley 1.5.4. Please check for a newer version of SMAPI: https://smapi.io.");
+                Console.ReadLine();
+                return;
+            }
+
             // game folder doesn't contain paths beyond the max limit
             {
                 string[] tooLongPaths = PathUtilities.GetTooLongPaths(Path.Combine(paths.GamePath, "Mods")).ToArray();
diff --git a/src/SMAPI/Constants.cs b/src/SMAPI/Constants.cs
index 04e15998..247e32b7 100644
--- a/src/SMAPI/Constants.cs
+++ b/src/SMAPI/Constants.cs
@@ -81,7 +81,7 @@ namespace StardewModdingAPI
         public static ISemanticVersion MinimumGameVersion { get; } = new GameVersion("1.5.4");
 
         /// <summary>The maximum supported version of Stardew Valley.</summary>
-        public static ISemanticVersion MaximumGameVersion { get; } = null;
+        public static ISemanticVersion MaximumGameVersion { get; } = new GameVersion("1.5.4");
 
         /// <summary>The target game platform.</summary>
         public static GamePlatform TargetPlatform { get; } = EarlyConstants.Platform;
diff --git a/src/SMAPI/Program.cs b/src/SMAPI/Program.cs
index 3249e02f..b6464f3c 100644
--- a/src/SMAPI/Program.cs
+++ b/src/SMAPI/Program.cs
@@ -88,6 +88,10 @@ namespace StardewModdingAPI
                 if (!File.Exists(Path.Combine(EarlyConstants.ExecutionPath, $"{EarlyConstants.GameAssemblyName}.exe")))
                     Program.PrintErrorAndExit("Oops! SMAPI can't find the game. Make sure you're running StardewModdingAPI.exe in your game folder.");
 
+                // Stardew Valley 1.5.5+
+                if (File.Exists(Path.Combine(EarlyConstants.ExecutionPath, "Stardew Valley.dll")))
+                    Program.PrintErrorAndExit("Oops! You're running Stardew Valley 1.5.5 or later, but this version of SMAPI is only compatible up to Stardew Valley 1.5.4. Please check for a newer version of SMAPI: https://smapi.io.");
+
                 // can't load file
                 Program.PrintErrorAndExit(
                     message: "Oops! SMAPI couldn't load the game executable. The technical details below may have more info.",