diff --git a/ChangeLog b/ChangeLog
index 092d8b73..50ec5610 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -36,6 +36,10 @@ John Emmas
   Jackdmp changes log
 ---------------------------
 
+2012-03-15 Stephane Letz  <letz@grame.fr>
+
+	* POST_PACKED_STRUCTURE used for jack_latency_range_t type.
+
 2012-03-09 Stephane Letz  <letz@grame.fr>
 
 	* Remove JACK_32_64 flag, so POST_PACKED_STRUCTURE now always used.
diff --git a/common/jack/systemdeps.h b/common/jack/systemdeps.h
index 4806533b..3c3c064f 100644
--- a/common/jack/systemdeps.h
+++ b/common/jack/systemdeps.h
@@ -49,6 +49,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
             #define POST_PACKED_STRUCTURE ;__pragma(pack(pop))
             /* and POST_PACKED_STRUCTURE needs to be a macro which
             restores the packing to its previous setting */
+        #else
+            #define PRE_PACKED_STRUCTURE
+            #define POST_PACKED_STRUCTURE
         #endif
 
     #endif
diff --git a/common/jack/types.h b/common/jack/types.h
index cfad3e54..fa059159 100644
--- a/common/jack/types.h
+++ b/common/jack/types.h
@@ -259,6 +259,7 @@ typedef void (*JackLatencyCallback)(jack_latency_callback_mode_t mode, void *arg
 /**
  * the new latency API operates on Ranges.
  */
+PRE_PACKED_STRUCTURE
 struct _jack_latency_range
 {
     /**
@@ -269,7 +270,7 @@ struct _jack_latency_range
      * maximum latency
      */
     jack_nframes_t max;
-};
+} POST_PACKED_STRUCTURE;
 
 typedef struct _jack_latency_range jack_latency_range_t;
 
@@ -549,7 +550,7 @@ typedef enum {
 #define EXTENDED_TIME_INFO
 
 PRE_PACKED_STRUCTURE
-typedef struct {
+struct _jack_position {
 
     /* these four cannot be set from clients: the server sets them */
     jack_unique_t       unique_1;       /**< unique ID */
@@ -615,7 +616,9 @@ typedef struct {
     /* When (unique_1 == unique_2) the contents are consistent. */
     jack_unique_t       unique_2;       /**< unique ID */
 
-} POST_PACKED_STRUCTURE jack_position_t;
+} POST_PACKED_STRUCTURE;
+
+typedef struct _jack_position jack_position_t;
 
 /**
     * Prototype for the @a sync_callback defined by slow-sync clients.
diff --git a/common/shm.h b/common/shm.h
index 2a6d6096..2ee4e87e 100644
--- a/common/shm.h
+++ b/common/shm.h
@@ -117,20 +117,17 @@ extern "C"
      */
 
     PRE_PACKED_STRUCTURE
-    typedef struct _jack_shm_info {
+    struct _jack_shm_info {
         jack_shm_registry_index_t index;       /* offset into the registry */
         uint32_t size;
         union {
             void *attached_at;  /* address where attached */
             char ptr_size[8];
         } ptr;  /* a "pointer" that has the same 8 bytes size when compling in 32 or 64 bits */
-    }
-#ifdef _MSC_VER
-    jack_shm_info_t; POST_PACKED_STRUCTURE
-#else
-    POST_PACKED_STRUCTURE jack_shm_info_t;
-#endif
-
+    } POST_PACKED_STRUCTURE;
+    
+    typedef struct _jack_shm_info jack_shm_info_t;
+    
 	/* utility functions used only within JACK */
 
     void jack_shm_copy_from_registry (jack_shm_info_t*,
diff --git a/windows/JackCompilerDeps_os.h b/windows/JackCompilerDeps_os.h
index ecb767e9..ca7b7a38 100644
--- a/windows/JackCompilerDeps_os.h
+++ b/windows/JackCompilerDeps_os.h
@@ -22,6 +22,7 @@
 #define __JackCompilerDeps_WIN32__
 
 #define	LIB_EXPORT __declspec(dllexport)
+
 #ifdef SERVER_SIDE
     #define	SERVER_EXPORT __declspec(dllexport)
 #else
@@ -69,4 +70,8 @@
     
 #endif
 
+#if defined(_MSC_VER) /* Added by JE - 31-01-2012 */
+#define snprintf _snprintf
+#endif
+
 #endif