diff --git a/pkg/semtech-loramac/patches/0003-adapt-utilities-functions.patch b/pkg/semtech-loramac/patches/0003-adapt-utilities-functions.patch
index 42aa1dd26c..9b03b14d18 100644
--- a/pkg/semtech-loramac/patches/0003-adapt-utilities-functions.patch
+++ b/pkg/semtech-loramac/patches/0003-adapt-utilities-functions.patch
@@ -1,14 +1,14 @@
-From 406e1900f38e6ca43e74c98a5de0c1ec0f3e3213 Mon Sep 17 00:00:00 2001
+From 1143af922083090a08761ab1a871c7922962218f Mon Sep 17 00:00:00 2001
 From: Alexandre Abadie <alexandre.abadie@inria.fr>
 Date: Tue, 16 Jan 2018 15:04:09 +0100
 Subject: [PATCH] patch utilities functions
 
 ---
- src/boards/mcu/stm32/utilities.c | 48 +++++++++++-----------------------------
- 1 file changed, 13 insertions(+), 35 deletions(-)
+ src/boards/mcu/stm32/utilities.c | 46 +++++++++-----------------------
+ 1 file changed, 12 insertions(+), 34 deletions(-)
 
 diff --git a/src/boards/mcu/stm32/utilities.c b/src/boards/mcu/stm32/utilities.c
-index 8861235..583cae1 100644
+index 8861235..e339ba5 100644
 --- a/src/boards/mcu/stm32/utilities.c
 +++ b/src/boards/mcu/stm32/utilities.c
 @@ -14,8 +14,10 @@ Maintainer: Miguel Luis and Gregory Cristian
@@ -37,7 +37,7 @@ index 8861235..583cae1 100644
  {
 -    return ( int32_t )rand1( ) % ( max - min + 1 ) + min;
 -}
-+    return random_uint32_range(min, max + 1);
++    return (int32_t)random_uint32() % (max - min + 1) + min;
 +};
  
  void memcpy1( uint8_t *dst, const uint8_t *src, uint16_t size )
@@ -83,10 +83,8 @@ index 8861235..583cae1 100644
 -    {
 -        return '?';
 -    }
--}
 +    memset(dst, value, size);
-+}
-\ No newline at end of file
+ }
 -- 
-2.14.1
+2.17.1