diff --git a/openair3/UTILS/conversions.h b/openair3/UTILS/conversions.h
index cce89eca1c..00b650a302 100644
--- a/openair3/UTILS/conversions.h
+++ b/openair3/UTILS/conversions.h
@@ -400,10 +400,10 @@ do {                                                    \
 #define TRANSPORT_LAYER_ADDRESS_IPv4_TO_BIT_STRING(mACRO, bITsTRING)    \
 do {                                                    \
     (bITsTRING)->buf = calloc(4, sizeof(uint8_t));      \
-    (bITsTRING)->buf[0] = (mACRO) >> 24 & 0xFF;         \
-    (bITsTRING)->buf[1] = (mACRO) >> 16 & 0xFF;         \
-    (bITsTRING)->buf[2] = (mACRO) >> 8 & 0xFF;          \
-    (bITsTRING)->buf[3] = (mACRO) &  0xFF;              \
+    (bITsTRING)->buf[3] = (mACRO) >> 24 & 0xFF;         \
+    (bITsTRING)->buf[2] = (mACRO) >> 16 & 0xFF;         \
+    (bITsTRING)->buf[1] = (mACRO) >> 8 & 0xFF;          \
+    (bITsTRING)->buf[0] = (mACRO) &  0xFF;              \
     (bITsTRING)->size = 4;                              \
     (bITsTRING)->bits_unused = 0;                       \
 } while(0)
@@ -412,10 +412,10 @@ do {                                                    \
 do {                                                                    \
     DevCheck((bITsTRING)->size == 4, (bITsTRING)->size, 4, 0);          \
     DevCheck((bITsTRING)->bits_unused == 0, (bITsTRING)->bits_unused, 0, 0); \
-    mACRO = ((bITsTRING)->buf[0] << 24) +                               \
-            ((bITsTRING)->buf[1] << 16) +                               \
-            ((bITsTRING)->buf[2] << 8) +                                \
-            ((bITsTRING)->buf[3]);                                      \
+    mACRO = ((bITsTRING)->buf[3] << 24) +                               \
+            ((bITsTRING)->buf[2] << 16) +                               \
+            ((bITsTRING)->buf[1] << 8) +                                \
+            ((bITsTRING)->buf[0]);                                      \
 } while (0)