diff --git a/src/drivers/pc80/tpm/tis.c b/src/drivers/pc80/tpm/tis.c
index 495bb4a..67aff43 100644
--- a/src/drivers/pc80/tpm/tis.c
+++ b/src/drivers/pc80/tpm/tis.c
@@ -743,7 +743,7 @@
 	/* Set TPM interrupt vector */
 	tpm_write_int_vector(vector, locality);
 
-	/* Set TPM interupt polarity and disable interrupts */
+	/* Set TPM interrupt polarity and disable interrupts */
 	tpm_write_int_polarity(polarity, locality);
 
 	/* Close connection if it was opened */