diff --git a/library/rsa.c b/library/rsa.c
index bf24a09..7931673 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -210,7 +210,7 @@
 #endif
 
     /* It wouldn't lead to an error if it wasn't satisfied,
-     * but check for PQ >= 1 nonetheless. */
+     * but check for QP >= 1 nonetheless. */
 #if !defined(MBEDTLS_RSA_NO_CRT)
     if( is_priv &&
         mbedtls_mpi_cmp_int( &ctx->QP, 0 ) <= 0 )
diff --git a/library/rsa_internal.c b/library/rsa_internal.c
index 5e35dbf..e28ca50 100644
--- a/library/rsa_internal.c
+++ b/library/rsa_internal.c
@@ -370,7 +370,7 @@
 #endif /* MBEDTLS_GENPRIME */
 
     /*
-     * Step 2: Check that 1 < N = PQ
+     * Step 2: Check that 1 < N = P * Q
      */
 
     if( P != NULL && Q != NULL && N != NULL )