diff --git a/pkgs/development/libraries/mbedtls/generic.nix b/pkgs/development/libraries/mbedtls/generic.nix
index adc46adb75f..3ca0b491fb8 100644
--- a/pkgs/development/libraries/mbedtls/generic.nix
+++ b/pkgs/development/libraries/mbedtls/generic.nix
@@ -42,6 +42,12 @@ stdenv.mkDerivation rec {
     "-DGEN_FILES=off"
   ];
 
+  doCheck = true;
+
+  # Parallel checking causes test failures
+  # https://github.com/Mbed-TLS/mbedtls/issues/4980
+  enableParallelChecking = false;
+
   meta = with lib; {
     homepage = "https://www.trustedfirmware.org/projects/mbed-tls/";
     changelog = "https://github.com/Mbed-TLS/mbedtls/blob/${pname}-${version}/ChangeLog";