diff --git a/testing/chameleon_ztesting.c b/testing/chameleon_ztesting.c
index dfe7776bf89fa8a11ac8c07a4362a66f452eb776..9d97c89d21ced4a14d44cd9b26f5af9d76dc7eb6 100644
--- a/testing/chameleon_ztesting.c
+++ b/testing/chameleon_ztesting.c
@@ -40,11 +40,11 @@ parameter_t parameters[] = {
     { "help",     "Show this help",                           'h', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "human",    "Enable human readable mode",               'H', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "niter",    "Perform multiple iteration per test",      'l', PARAM_OPTION, 1, 0, TestValInt, {1}, NULL, pread_int, sprint_int },
-    { "nowarmup", "Disable the warmup run to load libraries", -30, PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
+    { "nowarmup", "Disable the warmup run to load libraries", 'w', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
 #if !defined(CHAMELEON_TESTINGS_VENDOR)
     { "check",    "Enable checking of the result",            'c', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
-    { "trace",    "Enable the trace generation",              -31, PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
-    { "mtxfmt",   "Change the way the matrix is stored (0: global, 1: tiles, 2: OOC)", -32, PARAM_OPTION | PARAM_INPUT | PARAM_OUTPUT, 1, 6, TestValInt, {0}, NULL, pread_int, sprint_int },
+    { "trace",    "Enable the trace generation",              'T', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
+    { "mtxfmt",   "Change the way the matrix is stored (0: global, 1: tiles, 2: OOC)", 'F', PARAM_OPTION | PARAM_INPUT | PARAM_OUTPUT, 1, 6, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "profile",  "Display the kernel profiling",             -33, PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "forcegpu", "Force kernels on GPU",                     -34, PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "async",    "Switch to the Async interface",                        's', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
diff --git a/testing/vendor_ztesting.c b/testing/vendor_ztesting.c
index df72f106c4c9315a0878d6811da589ce6975f44b..c46b871ab2732f474b76e44b1d8f946fb5bafd36 100644
--- a/testing/vendor_ztesting.c
+++ b/testing/vendor_ztesting.c
@@ -34,7 +34,7 @@ parameter_t parameters[] = {
     { "help",     "Show this help",                           'h', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "human",    "Enable human readable mode",               'H', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
     { "niter",    "Perform multiple iteration per test",      'l', PARAM_OPTION, 1, 0, TestValInt, {1}, NULL, pread_int, sprint_int },
-    { "nowarmup", "Disable the warmup run to load libraries", -30, PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
+    { "nowarmup", "Disable the warmup run to load libraries", 'w', PARAM_OPTION, 0, 0, TestValInt, {0}, NULL, pread_int, sprint_int },
 
     { NULL, "Machine parameters", 0, PARAM_OPTION, 0, 0, 0, {0}, NULL, NULL, NULL },
     { "threads", "Number of CPU workers per node",      't', PARAM_OPTION | PARAM_OUTPUT, 1, 7, TestValInt, {-1}, NULL, pread_int, sprint_int },