diff --git a/Unity-build.md b/Unity-build.md
index d3d0a326863b..265470655695 100644
--- a/Unity-build.md
+++ b/Unity-build.md
@@ -14,7 +14,8 @@
 
 #### Runtime
 From the root of your cloned mono directory run:
-- external\buildscripts\build_runtime_win.pl
+- external\buildscripts\build_runtime_win64.pl
+(there are variations of build_runtime script for other platforms)
 
 or: Open msvc/mono.sln in Visual Studio and build the Runtime/libmono-dynamic project
 
@@ -52,4 +53,4 @@ From the root of your cloned mono directory run:
 ### Build on other platforms
 - Run external/buildscripts/build_runtime_myplatform.pl (Runtime only)
 or
-- Run ./autogen.sh followed by make. (All platforms (requires cygwin on windows))
\ No newline at end of file
+- Run ./autogen.sh followed by make. (All platforms (requires cygwin on windows))
diff --git a/mono/metadata/oop.c b/mono/metadata/oop.c
index b42c4fae09ff..92036b11bfae 100644
--- a/mono/metadata/oop.c
+++ b/mono/metadata/oop.c
@@ -51,6 +51,8 @@ typedef struct _MonoStackFrameDetails
     size_t classNameLen;
     char* assemblyName;
     size_t assemblyNameLen;
+    char* assemblyFileName;      
+    size_t assemblyFileNameLen;
 } MonoStackFrameDetails;
 
 typedef gboolean(*ReadMemoryCallback)(void* buffer, gsize* read, const void* address, gsize size, void* userdata);
@@ -425,6 +427,11 @@ mono_unity_oop_get_stack_frame_details(
             frameDetails->assemblyNameLen,
             read_pointer(OFFSET_MEMBER(MonoImage, image, assembly_name)));
 
+	frameDetails->assemblyFileNameLen = read_nt_string(
+		frameDetails->assemblyFileName,
+		frameDetails->assemblyFileNameLen,
+		read_pointer(OFFSET_MEMBER(MonoImage, image, filename)));
+
         free(className);
         free(nsName);