diff --git a/matlab/run_gdat_tests.m b/matlab/run_gdat_tests.m
index 550a31e9ddf8ae996dc2837f65a488bd9d6891cb..c2250befd2190018ab32402d794739dc4379473d 100644
--- a/matlab/run_gdat_tests.m
+++ b/matlab/run_gdat_tests.m
@@ -4,7 +4,6 @@ function [passed,results] = run_gdat_tests(test_case,coverage_report)
 if nargin==0 || isempty(test_case)
   test_case = 'all'; % default
 end
-test_case = lower(test_case); % lowercase
 
 if nargin < 2
   coverage_report = false; % default