diff --git a/tests/api.c b/tests/api.c
index 015ed7802..a55a30c87 100644
--- a/tests/api.c
+++ b/tests/api.c
@@ -14798,6 +14798,13 @@ static int test_wc_ed25519_sign_msg (void)
 
             /* Test bad args. */
             if (ret == 0) {
+                AssertIntEQ(wc_ed25519_verify_msg(sig, siglen - 1, msg,
+                                                  msglen, &verify_ok, &key),
+                                                  BAD_FUNC_ARG);
+                AssertIntEQ(wc_ed25519_verify_msg(sig, siglen + 1, msg,
+                                                  msglen, &verify_ok, &key),
+                                                  BAD_FUNC_ARG);
+
                 ret = wc_ed25519_verify_msg(NULL, siglen, msg, msglen, &verify_ok,
                                                                         &key);
                 if (ret == BAD_FUNC_ARG) {
@@ -15547,6 +15554,15 @@ static int test_wc_ed448_sign_msg (void)
 
             /* Test bad args. */
             if (ret == 0) {
+                AssertIntEQ(wc_ed448_verify_msg(sig, siglen - 1, msg,
+                                                  msglen, &verify_ok, &key,
+                                                  NULL, 0),
+                                                  BAD_FUNC_ARG);
+                AssertIntEQ(wc_ed448_verify_msg(sig, siglen + 1, msg,
+                                                  msglen, &verify_ok, &key,
+                                                  NULL, 0),
+                                                  BAD_FUNC_ARG);
+
                 ret = wc_ed448_verify_msg(NULL, siglen, msg, msglen, &verify_ok,
                                           &key, NULL, 0);
                 if (ret == BAD_FUNC_ARG) {
diff --git a/wolfcrypt/src/ed25519.c b/wolfcrypt/src/ed25519.c
index b78732d5e..64aee3389 100644
--- a/wolfcrypt/src/ed25519.c
+++ b/wolfcrypt/src/ed25519.c
@@ -365,7 +365,7 @@ static int ed25519_verify_msg(const byte* sig, word32 sigLen, const byte* msg,
     *res = 0;
 
     /* check on basics needed to verify signature */
-    if (sigLen < ED25519_SIG_SIZE || (sig[ED25519_SIG_SIZE-1] & 224))
+    if (sigLen != ED25519_SIG_SIZE || (sig[ED25519_SIG_SIZE-1] & 224))
         return BAD_FUNC_ARG;
 
     /* uncompress A (public key), test if valid, and negate it */
diff --git a/wolfcrypt/src/ed448.c b/wolfcrypt/src/ed448.c
index edeec0707..a25fc5bcc 100644
--- a/wolfcrypt/src/ed448.c
+++ b/wolfcrypt/src/ed448.c
@@ -379,7 +379,7 @@ static int ed448_verify_msg(const byte* sig, word32 sigLen, const byte* msg,
         *res = 0;
 
         /* check on basics needed to verify signature */
-        if (sigLen < ED448_SIG_SIZE) {
+        if (sigLen != ED448_SIG_SIZE) {
             ret = BAD_FUNC_ARG;
         }
     }