diff --git a/crypto/XKCP/lib/LowLevel.build b/crypto/XKCP/lib/LowLevel.build
index 965076ed52655903d9b09c0c12e71175a1545c36..723fa937718e8c0757055c075580bc52cbd614d5 100644
--- a/crypto/XKCP/lib/LowLevel.build
+++ b/crypto/XKCP/lib/LowLevel.build
@@ -217,7 +217,7 @@ The fragments below allow to select the desired implementation of the permutatio
     </fragment>
 
     <fragment name="K1600-AVX2" inherits="K1600 optimized">
-        <s>lib/low/KeccakP-1600/AVX2/KeccakP-1600-AVX2.s</s>
+        <s gcc="-Wa,-defsym,old_gas_syntax=1 -Wa,-defsym,no_plt=1" >lib/low/KeccakP-1600/AVX2/KeccakP-1600-AVX2.s</s>
         <h>lib/low/KeccakP-1600/AVX2/KeccakP-1600-SnP.h</h>
     </fragment>