diff --git a/openair1/SIMULATION/NR_PHY/ulsim.c b/openair1/SIMULATION/NR_PHY/ulsim.c
index b5299f5d16f2ffceeaddc52cc33a43a7e57034d5..934c6a2e6c84be9ae693d63ce216d0a7c36b2793 100644
--- a/openair1/SIMULATION/NR_PHY/ulsim.c
+++ b/openair1/SIMULATION/NR_PHY/ulsim.c
@@ -908,7 +908,7 @@ int main(int argc, char **argv)
             }
             /*  2*5*(50/2), for RB = 50,K = 2 for 5 OFDM PTRS symbols */
             available_bits -= 2 * ptrs_symbols * ((pusch_pdu->rb_size + ptrs_freq_density - 1) /ptrs_freq_density);
-            printf("After PTRS subtraction available_bits are : %d \n", available_bits);
+            printf("After PTRS subtraction available_bits are : %u \n", available_bits);
         }
 
         for (i = 0; i < available_bits; i++) {