diff --git a/CHANGELOG.md b/CHANGELOG.md
index 92a199f5..3d3336ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -46,6 +46,7 @@ will consitute of a breaking change warranting a new major release:
 - Changed PDEC addresses depending on which firmware version is used. It is suspected that
   the previous addresses were invalid and not properly covered by the Linux memory protection.
   The OBSW will use the old addresses for older FW versions.
+- Reverted some STR ComIF behaviour back to an older software version.
 
 ## Added
 
diff --git a/linux/acs/StrComHandler.cpp b/linux/acs/StrComHandler.cpp
index 2db73f35..0bb4d749 100644
--- a/linux/acs/StrComHandler.cpp
+++ b/linux/acs/StrComHandler.cpp
@@ -54,7 +54,7 @@ ReturnValue_t StrComHandler::performOperation(uint8_t operationCode) {
     switch (state) {
       case InternalState::POLL_ONE_REPLY: {
         // Stopwatch watch;
-        replyTimeout.setTimeout(200);
+        replyTimeout.setTimeout(400);
         readOneReply(static_cast<uint32_t>(state));
         {
           MutexGuard mg(lock);
@@ -720,7 +720,7 @@ ReturnValue_t StrComHandler::readReceivedMessage(CookieIF* cookie, uint8_t** buf
   {
     MutexGuard mg(lock);
     if (state != InternalState::SLEEPING) {
-      return returnvalue::OK;
+      return BUSY;
     }
     replyWasReceived = this->replyWasReceived;
   }
@@ -733,7 +733,7 @@ ReturnValue_t StrComHandler::readReceivedMessage(CookieIF* cookie, uint8_t** buf
     *size = replyLen;
   }
   replyLen = 0;
-  return returnvalue::OK;
+  return replyResult;
 }
 
 ReturnValue_t StrComHandler::unlockAndEraseRegions(uint32_t from, uint32_t to) {