diff --git a/src/SMAPI.Tests/Core/AssetNameTests.cs b/src/SMAPI.Tests/Core/AssetNameTests.cs
index fe70e330..fbc94e95 100644
--- a/src/SMAPI.Tests/Core/AssetNameTests.cs
+++ b/src/SMAPI.Tests/Core/AssetNameTests.cs
@@ -245,6 +245,8 @@ namespace SMAPI.Tests.Core
 
         [TestCase("Mods/SomeMod/SomeSubdirectory", "Mods/Some", true, ExpectedResult = true)]
         [TestCase("Mods/SomeMod/SomeSubdirectory", "Mods/Some", false, ExpectedResult = false)]
+        [TestCase("Mods/Jasper/Data", "Mods/Jas/Image", true, ExpectedResult = false)]
+        [TestCase("Mods/Jasper/Data", "Mods/Jas/Image", true, ExpectedResult = false)]
         public bool StartsWith_SubfolderWithPartial(string mainAssetName, string otherAssetName, bool allowSubfolder)
         {
             // arrange
diff --git a/src/SMAPI/Framework/Content/AssetName.cs b/src/SMAPI/Framework/Content/AssetName.cs
index 9d59f222..7b87c0c5 100644
--- a/src/SMAPI/Framework/Content/AssetName.cs
+++ b/src/SMAPI/Framework/Content/AssetName.cs
@@ -179,6 +179,10 @@ namespace StardewModdingAPI.Framework.Content
                 }
                 else
                 {
+                    // mismatch: prefix has more beyond this, and this segment isn't an exact match
+                    if (prefixParts.Remainder.Length != 0)
+                        return false;
+
                     // mismatch: cur segment doesn't start with prefix
                     if (!curParts.Current.StartsWith(prefixParts.Current, StringComparison.OrdinalIgnoreCase))
                         return false;