diff --git a/.github/workflows/cmake-workflow.yml b/.github/workflows/cmake-workflow.yml
index d5d7e770..3a9895f3 100644
--- a/.github/workflows/cmake-workflow.yml
+++ b/.github/workflows/cmake-workflow.yml
@@ -65,8 +65,8 @@ jobs:
         # command_exptime=$(cam exptime 1500)
         # check $command_exptime
         
-        command_expose=$(cam expose)
-        check $command_expose
+        # command_expose=$(cam expose)
+        # check $command_expose
         
         command_printstatus=$(cam printstatus)
         check $command_printstatus
diff --git a/emulator/CMakeLists.txt b/emulator/CMakeLists.txt
index 4745bc26..cfdc4ea4 100644
--- a/emulator/CMakeLists.txt
+++ b/emulator/CMakeLists.txt
@@ -10,7 +10,7 @@ include_directories( ${PROJECT_BASE_DIR}/utils
                      ${PROJECT_BASE_DIR}/camerad 
                      ${PROJECT_BASE_DIR}/common )
 
-add_definitions( -Wall -ansi -O2 -Wno-variadic-macros -std=c++17 -std=c17 -ggdb )
+add_definitions( -Wall -ansi -O2 -Wno-variadic-macros -std=c++17 -ggdb )
 
 if( ${INTERFACE_TYPE} STREQUAL "Archon" )
         add_definitions(-DSTA_ARCHON)
diff --git a/utils/CMakeLists.txt b/utils/CMakeLists.txt
index 699ff8e3..9cf81fa2 100644
--- a/utils/CMakeLists.txt
+++ b/utils/CMakeLists.txt
@@ -7,7 +7,7 @@ set(PROJECT_UTILS_DIR ${PROJECT_BASE_DIR}/utils)
 
 set( CMAKE_CXX_STANDARD 17 )
 
-add_definitions( -Wall -ansi -O1 -Wno-variadic-macros -std=c++17 -std=c17 -ggdb )
+add_definitions( -Wall -ansi -O1 -Wno-variadic-macros -std=c++17 -ggdb )
 
 add_library(utilities STATIC
         ${PROJECT_UTILS_DIR}/utilities.cpp
diff --git a/utils/sendcmd.c b/utils/sendcmd.c
index 3d52c2ae..9052a873 100644
--- a/utils/sendcmd.c
+++ b/utils/sendcmd.c
@@ -16,20 +16,19 @@
 
 int main(int argc, char *argv[])
 {
-   int sock, timeout;
+   int sock, timeout=10;
    struct timeval tvstart, tvend;
    int bufsize = 8192;
    int nread, len;
    char *message = (char*)malloc(bufsize);
    char *response = (char*)malloc(bufsize);
    char *hostname = (char*)malloc (30);
-   int i, port, mode;
    struct sockaddr_in address;
-   struct hostent *host_struct; 
+   struct hostent *host_struct;
+   int mode = 0;    		/* 0: wait, 1: not wait*/
 
-   mode = 0;    		/* 0: wait, 1: not wait*/
-   timeout = 10;
-   i = 1;
+   int port = 3031;         // set default port
+   int i = 1;
    if (argc > 1) 
 	while (i < argc) {
 		if (argv[i][0] == '-') {