diff --git a/Userland/Libraries/LibCrypto/ASN1/DER.cpp b/Userland/Libraries/LibCrypto/ASN1/DER.cpp
index 9f3b51f160..846327c553 100644
--- a/Userland/Libraries/LibCrypto/ASN1/DER.cpp
+++ b/Userland/Libraries/LibCrypto/ASN1/DER.cpp
@@ -100,7 +100,7 @@ Result<bool, DecodeError> Decoder::decode_boolean(ReadonlyBytes data)
     if (data.size() != 1)
         return DecodeError::InvalidInputFormat;
 
-    return data[0] == 0;
+    return data[0] != 0;
 }
 
 Result<UnsignedBigInteger, DecodeError> Decoder::decode_arbitrary_sized_integer(ReadonlyBytes data)