diff --git a/boot/bootutil/src/image_rsa.c b/boot/bootutil/src/image_rsa.c
index fd2d913..7773299 100644
--- a/boot/bootutil/src/image_rsa.c
+++ b/boot/bootutil/src/image_rsa.c
@@ -159,7 +159,7 @@
     uint8_t h2[PSS_HLEN];
     int i;
 
-    if (ctx->len != PSS_EMLEN || PSS_EMLEN != MBEDTLS_MPI_MAX_SIZE) {
+    if (ctx->len != PSS_EMLEN || PSS_EMLEN > MBEDTLS_MPI_MAX_SIZE) {
         return -1;
     }