diff --git a/HACKING b/HACKING
index fe1450f5..b1fa7f37 100644
--- a/HACKING
+++ b/HACKING
@@ -5,7 +5,8 @@
     guix shell #64 bit + 32bit
 
     CC=i686-unknown-linux-gnu-gcc ./configure
-    CC=arm-unknown-linux-gnu-gcc ./configure
+    CC=arm-unknown-linux-gnueabihf-gcc ./configure
+
 or
     ./configure