diff --git a/drivers/video/v4l2driver.cpp b/drivers/video/v4l2driver.cpp
index b02dd24a8f..4088418bb5 100644
--- a/drivers/video/v4l2driver.cpp
+++ b/drivers/video/v4l2driver.cpp
@@ -1025,7 +1025,7 @@ bool V4L2_Driver::setManualExposure(double duration)
     */
     if (isIGuiderOrIPolar())
     {
-        if (duration <= 0.02f)
+        if (duration <= 0.2f)
         {
             ticks = lround(duration * 100.0f);
         }
@@ -1591,7 +1591,7 @@ void V4L2_Driver::newFrame()
         }
 
         float current_frame_duration_f = (float) current_frame_duration.tv_sec + (float) current_frame_duration.tv_usec / 1000000.0f;
-        if( !m_StackMode && (current_frame_duration_f < expected_frame_duration * 0.9 || current_frame_duration_f > expected_frame_duration * 1.1))
+        if( m_StackMode == STACK_NONE && (current_frame_duration_f < expected_frame_duration * 0.9 || current_frame_duration_f > expected_frame_duration * 1.1))
         {
             LOGF_INFO("Skip frame with incorrect duration (%f seconds)", current_frame_duration_f);
             return;