diff --git a/src/grovescam/grovescam.cxx b/src/grovescam/grovescam.cxx
index 3812b096..881db9c0 100644
--- a/src/grovescam/grovescam.cxx
+++ b/src/grovescam/grovescam.cxx
@@ -468,6 +468,7 @@ bool GROVESCAM::storeImage(const char *fname)
             goto retry;
           else
             {
+              fclose(file);
               throw std::runtime_error(std::string(__FUNCTION__) +
                                        ": cksum error, maximum retries exceeded");
               return false;
diff --git a/src/ozw/ozw.cxx b/src/ozw/ozw.cxx
index edb6140a..d21aa347 100644
--- a/src/ozw/ozw.cxx
+++ b/src/ozw/ozw.cxx
@@ -54,6 +54,7 @@ OZW::OZW()
 
   if (pthread_mutex_init(&m_nodeLock, &mutexAttrib))
     {
+      pthread_mutexattr_destroy(&mutexAttrib);
       throw std::runtime_error(std::string(__FUNCTION__) +
                                ": pthread_mutex_init(nodeLock) failed");
     }
diff --git a/src/scam/scam.cxx b/src/scam/scam.cxx
index 83bfcccc..018c2313 100644
--- a/src/scam/scam.cxx
+++ b/src/scam/scam.cxx
@@ -468,6 +468,7 @@ bool SCAM::storeImage(const char *fname)
             goto retry;
           else
             {
+              fclose(file);
               throw std::runtime_error(std::string(__FUNCTION__) +
                                        ": cksum error, maximum retries exceeded");
               return false;
diff --git a/src/sx1276/sx1276.cxx b/src/sx1276/sx1276.cxx
index de37c084..32119c5a 100644
--- a/src/sx1276/sx1276.cxx
+++ b/src/sx1276/sx1276.cxx
@@ -151,6 +151,7 @@ SX1276::SX1276(uint8_t chipRev, int bus, int cs, int resetPin, int dio0,
   
   if (pthread_mutex_init(&m_intrLock, &mutexAttrib))
     {
+      pthread_mutexattr_destroy(&mutexAttrib);
       throw std::runtime_error(std::string(__FUNCTION__) +
                                ": pthread_mutex_init(intrLock) failed");
     }