diff --git a/linux/spi/SpiComIF.cpp b/linux/spi/SpiComIF.cpp
index 3dc4b84..9225adb 100644
--- a/linux/spi/SpiComIF.cpp
+++ b/linux/spi/SpiComIF.cpp
@@ -181,7 +181,9 @@ ReturnValue_t SpiComIF::sendMessage(CookieIF *cookie, const uint8_t *sendData, s
     if(gpioId != gpio::NO_GPIO) {
         result = spiMutex->lockMutex(timeoutType, timeoutMs);
         if (result != RETURN_OK) {
+#if FSFW_CPP_OSTREAM_ENABLED == 1
             sif::error << "SpiComIF::sendMessage: Failed to lock mutex" << std::endl;
+#endif
             return result;
         }
         gpioComIF->pullLow(gpioId);
@@ -230,7 +232,9 @@ ReturnValue_t SpiComIF::sendMessage(CookieIF *cookie, const uint8_t *sendData, s
         gpioComIF->pullHigh(gpioId);
         result = spiMutex->unlockMutex();
         if (result != RETURN_OK) {
+#if FSFW_CPP_OSTREAM_ENABLED == 1
             sif::error << "SpiComIF::sendMessage: Failed to unlock mutex" << std::endl;
+#endif
             return result;
         }
     }
@@ -272,7 +276,9 @@ ReturnValue_t SpiComIF::requestReceiveMessage(CookieIF *cookie, size_t requestLe
     if(gpioId != gpio::NO_GPIO) {
         result = spiMutex->lockMutex(timeoutType, timeoutMs);
         if (result != RETURN_OK) {
+#if FSFW_CPP_OSTREAM_ENABLED == 1
             sif::error << "SpiComIF::getSendSuccess: Failed to lock mutex" << std::endl;
+#endif
             return result;
         }
         gpioComIF->pullLow(gpioId);
@@ -293,7 +299,9 @@ ReturnValue_t SpiComIF::requestReceiveMessage(CookieIF *cookie, size_t requestLe
         gpioComIF->pullHigh(gpioId);
         result = spiMutex->unlockMutex();
         if (result != RETURN_OK) {
+#if FSFW_CPP_OSTREAM_ENABLED == 1
             sif::error << "SpiComIF::getSendSuccess: Failed to unlock mutex" << std::endl;
+#endif
             return result;
         }
     }