diff --git a/ethash.go b/ethash.go
index 34ec753c..82a80652 100644
--- a/ethash.go
+++ b/ethash.go
@@ -3,11 +3,11 @@ package ethash
 /*
 #cgo CFLAGS: -std=gnu99 -Wall
 #cgo LDFLAGS: -lm
-#include "src/libethash/util.c"
 #include "src/libethash/internal.c"
 #include "src/libethash/sha3.c"
 #include "src/libethash/io.c"
 #ifdef _WIN32
+#include "src/libethash/util_win32.c"
 #include "src/libethash/io_win32.c"
 #include "src/libethash/mmap_win32.c"
 #else
diff --git a/setup.py b/setup.py
index bfe95596..18aa20f6 100755
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
     'src/libethash/sha3.c']
 if os.name == 'nt':
     sources += [
-        'src/libethash/util.c',
+        'src/libethash/util_win32.c',
         'src/libethash/io_win32.c',
         'src/libethash/mmap_win32.c',
     ]
diff --git a/src/libethash/CMakeLists.txt b/src/libethash/CMakeLists.txt
index 4875dcf7..a65621c3 100644
--- a/src/libethash/CMakeLists.txt
+++ b/src/libethash/CMakeLists.txt
@@ -20,7 +20,7 @@ set(FILES 	util.h
           	data_sizes.h)
 
 if (MSVC)
-	list(APPEND FILES util.c io_win32.c mmap_win32.c)
+	list(APPEND FILES util_win32.c io_win32.c mmap_win32.c)
 else()
 	list(APPEND FILES io_posix.c)
 endif()
diff --git a/src/libethash/util.c b/src/libethash/util_win32.c
similarity index 100%
rename from src/libethash/util.c
rename to src/libethash/util_win32.c