diff --git a/src/coding/SASSC_decoder.c b/src/coding/sassc_decoder.c
similarity index 100%
rename from src/coding/SASSC_decoder.c
rename to src/coding/sassc_decoder.c
diff --git a/src/libvgmstream.vcproj b/src/libvgmstream.vcproj
index 478a451a..3af9348f 100644
--- a/src/libvgmstream.vcproj
+++ b/src/libvgmstream.vcproj
@@ -1803,7 +1803,7 @@
 					>
 				</File>
 				<File
-					RelativePath=".\coding\SASSC_decoder.c"
+					RelativePath=".\coding\sassc_decoder.c"
 					>
 				</File>
 				<File
diff --git a/src/libvgmstream.vcxproj b/src/libvgmstream.vcxproj
index 6552e1fe..76daf21a 100644
--- a/src/libvgmstream.vcxproj
+++ b/src/libvgmstream.vcxproj
@@ -503,7 +503,7 @@
     <ClCompile Include="coding\pcm_decoder.c" />
     <ClCompile Include="coding\psv_decoder.c" />
     <ClCompile Include="coding\psx_decoder.c" />
-    <ClCompile Include="coding\SASSC_decoder.c" />
+    <ClCompile Include="coding\sassc_decoder.c" />
     <ClCompile Include="coding\sdx2_decoder.c" />
     <ClCompile Include="coding\vorbis_custom_decoder.c" />
     <ClCompile Include="coding\vorbis_custom_utils_fsb.c" />
diff --git a/src/libvgmstream.vcxproj.filters b/src/libvgmstream.vcxproj.filters
index e6325086..f4649354 100644
--- a/src/libvgmstream.vcxproj.filters
+++ b/src/libvgmstream.vcxproj.filters
@@ -1072,7 +1072,7 @@
     <ClCompile Include="coding\psx_decoder.c">
       <Filter>coding\Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="coding\SASSC_decoder.c">
+    <ClCompile Include="coding\sassc_decoder.c">
       <Filter>coding\Source Files</Filter>
     </ClCompile>
     <ClCompile Include="coding\sdx2_decoder.c">