diff --git a/wolfcrypt/src/sp_int.c b/wolfcrypt/src/sp_int.c
index 558eaa232..88dce14fa 100644
--- a/wolfcrypt/src/sp_int.c
+++ b/wolfcrypt/src/sp_int.c
@@ -2607,6 +2607,12 @@ static int _sp_cmp(sp_int* a, sp_int* b)
 #endif
         ret = _sp_cmp_abs(a, b);
 #ifdef WOLFSSL_SP_INT_NEGATIVE
+        if (a->sign == MP_NEG) {
+            /* MP_GT = 1, MP_LT = -1, MP_EQ = 0
+             * Swapping MP_GT and MP_LT results.
+             */
+            ret = -ret;
+        }
     }
     else if (a->sign > b->sign) {
         ret = MP_LT;
diff --git a/wolfcrypt/test/test.c b/wolfcrypt/test/test.c
index 96e8ce567..515c33a35 100644
--- a/wolfcrypt/test/test.c
+++ b/wolfcrypt/test/test.c
@@ -34974,6 +34974,31 @@ static int mp_test_cmp(mp_int* a, mp_int* b)
     if (ret != MP_EQ)
         return -13010;
 
+#if (!defined(WOLFSSL_SP_MATH) && !defined(WOLFSSL_SP_MATH_ALL)) || \
+    defined(WOLFSSL_SP_INT_NEGATIVE)
+    mp_read_radix(a, "-1", MP_RADIX_HEX);
+    mp_read_radix(a, "1", MP_RADIX_HEX);
+    ret = mp_cmp(a, b);
+    if (ret != MP_LT)
+        return -13011;
+    ret = mp_cmp(b, a);
+    if (ret != MP_GT)
+        return -13012;
+
+    mp_read_radix(b, "-2", MP_RADIX_HEX);
+    ret = mp_cmp(a, b);
+    if (ret != MP_GT)
+        return -13013;
+    ret = mp_cmp(b, a);
+    if (ret != MP_LT)
+        return -13014;
+
+    mp_read_radix(a, "-2", MP_RADIX_HEX);
+    ret = mp_cmp(a, b);
+    if (ret != MP_EQ)
+        return -13015;
+#endif
+
     return 0;
 }