diff --git a/tests/testSynchroClient.cpp b/tests/testSynchroClient.cpp
index d135cf1d..acdeefef 100644
--- a/tests/testSynchroClient.cpp
+++ b/tests/testSynchroClient.cpp
@@ -129,8 +129,10 @@ int main(int ac, char *av [])
     }
 #endif
 
-    sem1->ConnectOutput(SERVER, "default");
-    sem2->ConnectInput(CLIENT, "default");
+    if (!sem1->ConnectOutput(SERVER, "default"))
+        return -1;
+    if (!sem2->ConnectInput(CLIENT, "default"))
+        return -1;
 
     obj = new Test2(sem1, sem2);
 
diff --git a/tests/testSynchroServer.cpp b/tests/testSynchroServer.cpp
index 6b655b9d..41eb5221 100644
--- a/tests/testSynchroServer.cpp
+++ b/tests/testSynchroServer.cpp
@@ -185,8 +185,10 @@ int main(int ac, char *av [])
     }
 #endif
 
-    sem1->Allocate(SERVER, "default", 0);
-    sem2->Allocate(CLIENT, "default", 0);
+    if (!sem1->Allocate(SERVER, "default", 0)
+        return -1;
+    if (!sem2->Allocate(CLIENT, "default", 0))
+        return -1;
 
     // run test in RT thread
     obj = new Test1(sem1, sem2);
diff --git a/tests/testSynchroServerClient.cpp b/tests/testSynchroServerClient.cpp
index 8772f535..f85c1992 100644
--- a/tests/testSynchroServerClient.cpp
+++ b/tests/testSynchroServerClient.cpp
@@ -225,10 +225,14 @@ int main(int ac, char *av [])
 
  #endif
 
-    sem1->Allocate(SERVER, "default", 0);
-    sem2->Allocate(CLIENT, "default", 0);
-    sem3->ConnectOutput(SERVER, "default");
-    sem4->ConnectInput(CLIENT, "default");
+    if (!sem1->Allocate(SERVER, "default", 0))
+        return -1;
+    if (!sem2->Allocate(CLIENT, "default", 0))
+        return -1;
+    if (sem3->ConnectOutput(SERVER, "default"))
+        return -1;
+    if (sem4->ConnectInput(CLIENT, "default"))
+        return -1;
 
     // run test in RT thread
     obj1 = new Test1(sem1, sem2);