diff --git a/tests/test-enhanced-mixer.cpp b/tests/test-enhanced-mixer.cpp
index 8ac00aa..d557daf 100644
--- a/tests/test-enhanced-mixer.cpp
+++ b/tests/test-enhanced-mixer.cpp
@@ -77,7 +77,7 @@ main(int argc, char **argv)
         exit(0);
     }
 
-    int errno = 0;
+    errno = 0;
     char* tail;
     int node_id = strtol( argv[1], &tail, 0 );
     int fb_id   = strtol( argv[2], &tail, 0 );
diff --git a/tests/test-mixer.cpp b/tests/test-mixer.cpp
index 807bd7b..5f426a7 100644
--- a/tests/test-mixer.cpp
+++ b/tests/test-mixer.cpp
@@ -227,7 +227,7 @@ main( int argc, char **argv )
         exit(0);
     }
 
-    int errno = 0;
+    errno = 0;
     char* tail;
     int port = strtol( argv[1], &tail, 0 );
     int node_id = strtol( argv[2], &tail, 0 );
diff --git a/tests/test-pan.cpp b/tests/test-pan.cpp
index 4b7b825..895c9cf 100644
--- a/tests/test-pan.cpp
+++ b/tests/test-pan.cpp
@@ -131,7 +131,7 @@ main(int argc, char **argv)
         exit(0);
     }
 
-    int errno = 0;
+    errno = 0;
     char* tail;
     int node_id = strtol( argv[1], &tail, 0 );
     int fb_id   = strtol( argv[2], &tail, 0 );
diff --git a/tests/test-volume.cpp b/tests/test-volume.cpp
index 65ccb8b..6810819 100644
--- a/tests/test-volume.cpp
+++ b/tests/test-volume.cpp
@@ -127,7 +127,7 @@ main(int argc, char **argv)
         exit(0);
     }
 
-    int errno = 0;
+    errno = 0;
     char* tail;
     int node_id = strtol( argv[1], &tail, 0 );
     int fb_id   = strtol( argv[2], &tail, 0 );