diff --git a/src/lib66/ssexec_start.c b/src/lib66/ssexec_start.c
index 045d7936ffe453da8b9fa5d7784d5c91c0c780e9..ccbdec8cecbdc9f42140373bb3c8bf713e9aa7d8 100644
--- a/src/lib66/ssexec_start.c
+++ b/src/lib66/ssexec_start.c
@@ -35,7 +35,7 @@
 static int empty = 0 ;
 static unsigned int RELOAD = 0 ;
 static unsigned int DEADLINE = 0 ;
-static char *SIG = "-U" ;
+static char *SIG = "-u" ;
 
 static genalloc nclassic = GENALLOC_ZERO ; //resolve_t type
 static genalloc nrc = GENALLOC_ZERO ; //resolve_t type
@@ -202,7 +202,7 @@ int ssexec_start(int argc, char const *const *argv,char const *const *envp,ssexe
 	// be sure that the global var are set correctly
 	RELOAD = 0 ;
 	DEADLINE = 0 ;
-	SIG = "-U" ;
+	SIG = "-u" ;
 		
 	if (info->timeout) DEADLINE = info->timeout ;
 	
diff --git a/src/lib66/ssexec_stop.c b/src/lib66/ssexec_stop.c
index f46124c48fe500bdae0d3b943ea5662fbc0fde75..97c66796365d2c78e0aea4bc9f4c42c130c9a09b 100644
--- a/src/lib66/ssexec_stop.c
+++ b/src/lib66/ssexec_stop.c
@@ -32,7 +32,7 @@
 
 static unsigned int DEADLINE = 0 ;
 static unsigned int UNSUP = 0 ;
-static char *SIG = "-D" ;
+static char *SIG = "-d" ;
 
 static ss_resolve_graph_t graph_unsup_cl = RESOLVE_GRAPH_ZERO ;
 static ss_resolve_graph_t graph_cl = RESOLVE_GRAPH_ZERO ;
@@ -115,7 +115,7 @@ int ssexec_stop(int argc, char const *const *argv,char const *const *envp,ssexec
 	// be sure that the global var are set correctly
 	DEADLINE = 0 ;
 	UNSUP = 0 ;
-	SIG = "-D" ;
+	SIG = "-d" ;
 		
 	if (info->timeout) DEADLINE = info->timeout ;