diff --git a/command/session_cmds.hpp b/command/session_cmds.hpp
index 05c312e..b3d0ca6 100644
--- a/command/session_cmds.hpp
+++ b/command/session_cmds.hpp
@@ -22,13 +22,13 @@
 struct SetSessionPrivLevelReq
 {
 #if BYTE_ORDER == LITTLE_ENDIAN
-    uint8_t reqPrivLevel : 4;
-    uint8_t reserved : 4;
+    uint8_t reqPrivLevel:4;
+    uint8_t reserved:4;
 #endif
 
 #if BYTE_ORDER == BIG_ENDIAN
-    uint8_t reserved : 4;
-    uint8_t reqPrivLevel : 4;
+    uint8_t reserved:4;
+    uint8_t reqPrivLevel:4;
 #endif
 
 } __attribute__((packed));
@@ -43,13 +43,13 @@
     uint8_t completionCode;
 
 #if BYTE_ORDER == LITTLE_ENDIAN
-    uint8_t newPrivLevel : 4;
-    uint8_t reserved : 4;
+    uint8_t newPrivLevel:4;
+    uint8_t reserved:4;
 #endif
 
 #if BYTE_ORDER == BIG_ENDIAN
-    uint8_t reserved : 4;
-    uint8_t newPrivLevel : 4;
+    uint8_t reserved:4;
+    uint8_t newPrivLevel:4;
 #endif
 
 } __attribute__((packed));