diff --git a/src/ds/d400/d400-auto-calibration.cpp b/src/ds/d400/d400-auto-calibration.cpp
index 1e1f2f0610..e195c4de1f 100644
--- a/src/ds/d400/d400-auto-calibration.cpp
+++ b/src/ds/d400/d400-auto-calibration.cpp
@@ -1552,8 +1552,8 @@ namespace librealsense
 
     std::shared_ptr<ds_advanced_mode_base> auto_calibrated::change_preset()
     {
-        preset old_preset_values;
-        rs2_rs400_visual_preset old_preset;
+        preset old_preset_values{};
+        rs2_rs400_visual_preset old_preset = { RS2_RS400_VISUAL_PRESET_DEFAULT };
 
         auto advanced_mode = dynamic_cast<ds_advanced_mode_base*>(this);
         if (advanced_mode)
@@ -1882,7 +1882,7 @@ namespace librealsense
                     fy = intrin.fy;
                 }
 
-                std::array<float, 4> rec_sides_cur;
+                std::array< float, 4 > rec_sides_cur{};
                 rs2_extract_target_dimensions(f, RS2_CALIB_TARGET_ROI_RECT_GAUSSIAN_DOT_VERTICES, rec_sides_cur.data(), 4, &e);
                 if (e)
                     throw std::runtime_error("Failed to extract target information\nfrom the captured frames!");
diff --git a/src/fw-logs/fw-log-data.h b/src/fw-logs/fw-log-data.h
index 5db0733c43..e8f02495bb 100644
--- a/src/fw-logs/fw-log-data.h
+++ b/src/fw-logs/fw-log-data.h
@@ -74,8 +74,8 @@ namespace librealsense
         class fw_log_data
         {
         public:
-            fw_log_data(void);
-            ~fw_log_data(void);
+            fw_log_data();
+            ~fw_log_data();
 
             uint32_t _magic_number;
             uint32_t _severity;
diff --git a/src/linux/backend-v4l2.cpp b/src/linux/backend-v4l2.cpp
index 6f9446c765..f2e0da7e7b 100644
--- a/src/linux/backend-v4l2.cpp
+++ b/src/linux/backend-v4l2.cpp
@@ -862,7 +862,7 @@ namespace librealsense
                     // Get DFU node for MIPI camera
                     vfd = open(dfu_device_path.c_str(), O_RDONLY | O_NONBLOCK);
 
-                    if (vfd > 0) {
+                    if (vfd >= 0) {
                         ::close(vfd); // file exists, close file and continue to assign it
                         info.dfu_device_path = dfu_device_path;
                     }