diff --git a/lnet/include/lnet/types.h b/lnet/include/lnet/types.h
index d4ca453e3274d5f94fead597c3d945a3deaf519b..74ef49393a94b2b72e252179b61e4b3218eaba7c 100644
--- a/lnet/include/lnet/types.h
+++ b/lnet/include/lnet/types.h
@@ -135,7 +135,7 @@ typedef struct {
         struct timeval     arrival_time;
 
         volatile ptl_seq_t sequence;
-} __attribute__((packed)) ptl_event_t;
+} ptl_event_t;
 #ifdef __CYGWIN__
 #pragma pop
 #endif
diff --git a/lustre/portals/include/portals/types.h b/lustre/portals/include/portals/types.h
index d4ca453e3274d5f94fead597c3d945a3deaf519b..74ef49393a94b2b72e252179b61e4b3218eaba7c 100644
--- a/lustre/portals/include/portals/types.h
+++ b/lustre/portals/include/portals/types.h
@@ -135,7 +135,7 @@ typedef struct {
         struct timeval     arrival_time;
 
         volatile ptl_seq_t sequence;
-} __attribute__((packed)) ptl_event_t;
+} ptl_event_t;
 #ifdef __CYGWIN__
 #pragma pop
 #endif