diff --git a/tests/primitives/vectors/RFC/HMAC/rfc-2202-md5.txt b/tests/primitives/vectors/RFC/HMAC/rfc-2202-md5.txt
index cb7cf0f..4122846 100644
--- a/tests/primitives/vectors/RFC/HMAC/rfc-2202-md5.txt
+++ b/tests/primitives/vectors/RFC/HMAC/rfc-2202-md5.txt
@@ -25,6 +25,7 @@
 
 Len = 160
 Key = 0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c
+# Note: We test the full MD rather than the truncated one in this test
 # "Test With Truncation"
 Msg = 546573742057697468205472756e636174696f6e
 MD = 56461ef2342edc00f9bab995690efd4c
diff --git a/tests/primitives/vectors/RFC/HMAC/rfc-2202-sha1.txt b/tests/primitives/vectors/RFC/HMAC/rfc-2202-sha1.txt
index 656d5f2..8023830 100644
--- a/tests/primitives/vectors/RFC/HMAC/rfc-2202-sha1.txt
+++ b/tests/primitives/vectors/RFC/HMAC/rfc-2202-sha1.txt
@@ -25,6 +25,7 @@
 
 Len = 160
 Key = 0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c
+# Note: We test the full MD rather than the truncated one in this test
 # "Test With Truncation"
 Msg = 546573742057697468205472756e636174696f6e
 MD = 4c1a03424b55e07fe7f27be1d58bb9324a9a5a04
diff --git a/tests/primitives/vectors/RFC/HMAC/rfc-2286-ripemd160.txt b/tests/primitives/vectors/RFC/HMAC/rfc-2286-ripemd160.txt
index 8408bd5..62e0992 100644
--- a/tests/primitives/vectors/RFC/HMAC/rfc-2286-ripemd160.txt
+++ b/tests/primitives/vectors/RFC/HMAC/rfc-2286-ripemd160.txt
@@ -25,6 +25,7 @@
 
 Len = 160
 Key = 0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c
+# Note: We test the full MD rather than the truncated one in this test
 # "Test With Truncation"
 Msg = 546573742057697468205472756e636174696f6e
 MD = 7619693978f91d90539ae786500ff3d8e0518e39