diff --git a/src/vnet/bier/bier_fmask.c b/src/vnet/bier/bier_fmask.c
index 1ca8a2e..b6169d3 100644
--- a/src/vnet/bier/bier_fmask.c
+++ b/src/vnet/bier/bier_fmask.c
@@ -311,7 +311,7 @@
     if (0 == bfm->bfm_bits.bfmb_refs[BIER_BP_TO_INDEX(bp)])
     {
         /*
-         * 0 -> 1 transistion - set the bit in the string
+         * 0 -> 1 transition - set the bit in the string
          */
         bier_bit_string_set_bit(&bfm->bfm_bits.bfmb_input_reset_string, bp);
     }
@@ -334,7 +334,7 @@
     if (0 == bfm->bfm_bits.bfmb_refs[BIER_BP_TO_INDEX(bp)])
     {
         /*
-         * 1 -> 0 transistion - clear the bit in the string
+         * 1 -> 0 transition - clear the bit in the string
          */
         bier_bit_string_clear_bit(&bfm->bfm_bits.bfmb_input_reset_string, bp);
     }