diff --git a/src/openrct2/command_line/sprite/SpriteBuild.cpp b/src/openrct2/command_line/sprite/SpriteBuild.cpp
index 13c85af74c..951313ab78 100644
--- a/src/openrct2/command_line/sprite/SpriteBuild.cpp
+++ b/src/openrct2/command_line/sprite/SpriteBuild.cpp
@@ -62,6 +62,8 @@ namespace OpenRCT2::CommandLine::Sprite
 
         uint32_t numSuccessful = 0;
 
+        std::unordered_map<u8string, Image> images{};
+
         // Note: jsonSprite is deliberately left non-const: json_t behaviour changes when const
         for (auto& [jsonKey, jsonSprite] : jsonSprites.items())
         {
@@ -84,17 +86,28 @@ namespace OpenRCT2::CommandLine::Sprite
 
             auto imagePath = Path::GetAbsolute(Path::Combine(directoryPath, strPath));
 
-            const auto image = SpriteImageLoad(imagePath, meta);
-            if (image == std::nullopt)
+            const auto image_iter = images.find(imagePath);
+            if (image_iter != images.end())
             {
-                fprintf(stderr, "Could not read image file: %s\nCanceling\n", imagePath.c_str());
-                return -1;
+                ImageImporter importer;
+                auto importResult = importer.Import(image_iter->second, meta);
+                spriteFile.AddImage(importResult);
             }
+            else
+            {
+                const auto image = SpriteImageLoad(imagePath, meta);
+                if (image == std::nullopt)
+                {
+                    fprintf(stderr, "Could not read image file: %s\nCanceling\n", imagePath.c_str());
+                    return -1;
+                }
+                images[imagePath] = image.value();
 
-            ImageImporter importer;
-            auto importResult = importer.Import(image.value(), meta);
+                ImageImporter importer;
+                auto importResult = importer.Import(image.value(), meta);
 
-            spriteFile.AddImage(importResult);
+                spriteFile.AddImage(importResult);
+            }
 
             if (!silent)
                 fprintf(stdout, "Added: %s\n", imagePath.c_str());