diff --git a/bsp_q7s/memory/scratchApi.cpp b/bsp_q7s/memory/scratchApi.cpp
index 83bc8239..1948ece3 100644
--- a/bsp_q7s/memory/scratchApi.cpp
+++ b/bsp_q7s/memory/scratchApi.cpp
@@ -1,8 +1,8 @@
 #include "scratchApi.h"
 
 ReturnValue_t scratch::writeString(std::string name, std::string string) {
-  std::ostringstream oss;
-  oss << "xsc_scratch write " << name << " \"" << string << "\"";
+  std::ostringstream oss("xsc_scratch write ", std::ostringstream::ate);
+  oss << name << " \"" << string << "\"";
   int result = std::system(oss.str().c_str());
   if (result != 0) {
     utility::handleSystemError(result, "scratch::writeString");
@@ -39,8 +39,8 @@ ReturnValue_t scratch::readString(std::string key, std::string &string) {
 }
 
 ReturnValue_t scratch::clearValue(std::string key) {
-  std::ostringstream oss;
-  oss << "xsc_scratch clear " << key;
+  std::ostringstream oss("xsc_scratch clear ", std::ostringstream::ate);
+  oss << key;
   int result = std::system(oss.str().c_str());
   if (result != 0) {
     utility::handleSystemError(result, "scratch::clearValue");
diff --git a/bsp_q7s/memory/scratchApi.h b/bsp_q7s/memory/scratchApi.h
index cd76fca1..b78fef7f 100644
--- a/bsp_q7s/memory/scratchApi.h
+++ b/bsp_q7s/memory/scratchApi.h
@@ -94,8 +94,8 @@ ReturnValue_t readToFile(std::string name, std::ifstream& file, std::string& fil
 
 template <typename T, class = typename std::enable_if<std::is_integral<T>::value>::type>
 inline ReturnValue_t writeNumber(std::string key, T num) noexcept {
-  std::ostringstream oss;
-  oss << "xsc_scratch write " << key << " " << std::to_string(num);
+  std::ostringstream oss("xsc_scratch write ", std::ostringstream::ate);
+  oss << key << " " << std::to_string(num);
   int result = std::system(oss.str().c_str());
   if (result != 0) {
     utility::handleSystemError(result, "scratch::writeNumber");
diff --git a/mission/devices/ScexDeviceHandler.cpp b/mission/devices/ScexDeviceHandler.cpp
index 4c84b40d..5cc11d7c 100644
--- a/mission/devices/ScexDeviceHandler.cpp
+++ b/mission/devices/ScexDeviceHandler.cpp
@@ -154,9 +154,10 @@ ReturnValue_t ScexDeviceHandler::interpretDeviceReply(DeviceCommandId_t id, cons
   ReturnValue_t status = RETURN_OK;
   auto oneFileHandler = [&](std::string cmdName) {
     fileId = random_string(6);
-    std::ostringstream oss("/tmp/scex-");
+    std::ostringstream oss("/tmp/scex-", std::ostringstream::ate);
     oss << cmdName << fileId << ".bin";
     fileName = oss.str();
+    std::cout << fileName << std::endl;
     ofstream out(fileName, ofstream::binary);
     if (out.bad()) {
       sif::error << "ScexDeviceHandler::interpretDeviceReply: Could not open file " << fileName
@@ -172,7 +173,7 @@ ReturnValue_t ScexDeviceHandler::interpretDeviceReply(DeviceCommandId_t id, cons
     if ((helper.getPacketCounter() == 1) or (not fileNameSet)) {
 
       fileId = random_string(6);
-      std::ostringstream oss("/tmp/scex-");
+      std::ostringstream oss("/tmp/scex-", std::ostringstream::ate);
       oss << cmdName << fileId << ".bin";
       fileName = oss.str();
       fileNameSet = true;
diff --git a/tmtc b/tmtc
index 70435736..0a655f51 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit 704357369e6374dc7cf8c88d71fd24bce3b772e0
+Subproject commit 0a655f51d4803d5561911101823e611d1f4a19ad