diff --git a/rostests/dxtest/ddraw/ddraw.rbuild b/rostests/dxtest/ddraw/ddraw.rbuild
index 5829f25c05e..5077d7362cd 100644
--- a/rostests/dxtest/ddraw/ddraw.rbuild
+++ b/rostests/dxtest/ddraw/ddraw.rbuild
@@ -7,6 +7,6 @@
 	<library>gdi32</library>
 	<library>ddraw</library>
 	<library>dxguid</library>
-	<file>ddraw_test.c</file>
+	<file>ddraw_test.cpp</file>
 	<file>testlist.cpp</file>
 </module>
diff --git a/rostests/dxtest/ddraw/ddraw_test.c b/rostests/dxtest/ddraw/ddraw_test.cpp
similarity index 95%
rename from rostests/dxtest/ddraw/ddraw_test.c
rename to rostests/dxtest/ddraw/ddraw_test.cpp
index 608a4ac8fa1..ba6a03df302 100644
--- a/rostests/dxtest/ddraw/ddraw_test.c
+++ b/rostests/dxtest/ddraw/ddraw_test.cpp
@@ -20,7 +20,7 @@ int main(int argc, char *argv[])
 		{
 			for (j = 0; j < NumTests(); j++)
 			{
-				if (stricmp(argv[i], TestList[j].Test) == 0)
+				if (_stricmp(argv[i], TestList[j].Test) == 0)
 				{
 					passed = 0;
 					failed = 0;
diff --git a/rostests/dxtest/ddraw/testlist.cpp b/rostests/dxtest/ddraw/testlist.cpp
index 84b85d7bece..32f2ae969aa 100644
--- a/rostests/dxtest/ddraw/testlist.cpp
+++ b/rostests/dxtest/ddraw/testlist.cpp
@@ -19,7 +19,7 @@ TEST TestList[] =
 };
 
 /* The function that gives us the number of tests */
-extern "C" INT NumTests(void)
+INT NumTests(void)
 {
 	return sizeof(TestList) / sizeof(TEST);
 }