diff --git a/tests/api/test_camellia.c b/tests/api/test_camellia.c
index cf557d50bd..34d33491bc 100644
--- a/tests/api/test_camellia.c
+++ b/tests/api/test_camellia.c
@@ -210,6 +210,12 @@ int test_wc_CamelliaCbcEncryptDecrypt(void)
         WC_CAMELLIA_BLOCK_SIZE), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
     ExpectIntEQ(wc_CamelliaCbcDecrypt(&camellia, dec, NULL,
         WC_CAMELLIA_BLOCK_SIZE), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
+
+    /* non-block-aligned input rejected with BAD_LENGTH_E */
+    ExpectIntEQ(wc_CamelliaCbcEncrypt(&camellia, enc, plainT,
+        WC_CAMELLIA_BLOCK_SIZE - 1), WC_NO_ERR_TRACE(BAD_LENGTH_E));
+    ExpectIntEQ(wc_CamelliaCbcDecrypt(&camellia, dec, enc,
+        WC_CAMELLIA_BLOCK_SIZE - 1), WC_NO_ERR_TRACE(BAD_LENGTH_E));
 #endif
     return EXPECT_RESULT();
 } /* END test_wc_CamelliaCbcEncryptDecrypt */
diff --git a/tests/api/test_des3.c b/tests/api/test_des3.c
index 541a108942..572428e1c3 100644
--- a/tests/api/test_des3.c
+++ b/tests/api/test_des3.c
@@ -165,6 +165,12 @@ int test_wc_Des3_CbcEncryptDecrypt(void)
     ExpectIntEQ(wc_Des3_CbcDecrypt(&des, plain, NULL, 24),
         WC_NO_ERR_TRACE(BAD_FUNC_ARG));
 
+    /* non-block-aligned input rejected with BAD_LENGTH_E */
+    ExpectIntEQ(wc_Des3_CbcEncrypt(&des, cipher, vector, DES_BLOCK_SIZE - 1),
+        WC_NO_ERR_TRACE(BAD_LENGTH_E));
+    ExpectIntEQ(wc_Des3_CbcDecrypt(&des, plain, cipher, DES_BLOCK_SIZE - 1),
+        WC_NO_ERR_TRACE(BAD_LENGTH_E));
+
     wc_Des3Free(&des);
 #endif
     return EXPECT_RESULT();
diff --git a/tests/api/test_rc2.c b/tests/api/test_rc2.c
index 5b5089a2e0..58a78a756a 100644
--- a/tests/api/test_rc2.c
+++ b/tests/api/test_rc2.c
@@ -216,6 +216,12 @@ int test_wc_Rc2CbcEncryptDecrypt(void)
     /* null input buffer */
     ExpectIntEQ(wc_Rc2CbcDecrypt(&rc2, plain, NULL, sizeof(output)),
         WC_NO_ERR_TRACE(BAD_FUNC_ARG));
+
+    /* non-block-aligned input rejected with BAD_LENGTH_E */
+    ExpectIntEQ(wc_Rc2CbcEncrypt(&rc2, cipher, input, RC2_BLOCK_SIZE - 1),
+        WC_NO_ERR_TRACE(BAD_LENGTH_E));
+    ExpectIntEQ(wc_Rc2CbcDecrypt(&rc2, plain, output, RC2_BLOCK_SIZE - 1),
+        WC_NO_ERR_TRACE(BAD_LENGTH_E));
 #endif
     return EXPECT_RESULT();
 } /* END test_wc_Rc2CbcEncryptDecrypt */