diff --git a/RPI/ISP/arducam_mipicamera.py b/RPI/ISP/arducam_mipicamera.py
index 8b6e0ad..2ccecd9 100644
--- a/RPI/ISP/arducam_mipicamera.py
+++ b/RPI/ISP/arducam_mipicamera.py
@@ -180,8 +180,8 @@ class CAMERA_INTERFACE(Structure):
 arducam_start_preview.restype = c_int
 
 arducam_stop_preview = camera_lib.arducam_stop_preview
-arducam_start_preview.argtypes = [c_void_p]
-arducam_start_preview.restype = c_int
+arducam_stop_preview.argtypes = [c_void_p]
+arducam_stop_preview.restype = c_int
 
 arducam_capture = camera_lib.arducam_capture
 arducam_capture.argtypes = [c_void_p, POINTER(IMAGE_FORMAT), c_int]
diff --git a/RPI/python/arducam_mipicamera.py b/RPI/python/arducam_mipicamera.py
index d7d196d..11130d6 100644
--- a/RPI/python/arducam_mipicamera.py
+++ b/RPI/python/arducam_mipicamera.py
@@ -180,8 +180,8 @@ class CAMERA_INTERFACE(Structure):
 arducam_start_preview.restype = c_int
 
 arducam_stop_preview = camera_lib.arducam_stop_preview
-arducam_start_preview.argtypes = [c_void_p]
-arducam_start_preview.restype = c_int
+arducam_stop_preview.argtypes = [c_void_p]
+arducam_stop_preview.restype = c_int
 
 arducam_capture = camera_lib.arducam_capture
 arducam_capture.argtypes = [c_void_p, POINTER(IMAGE_FORMAT), c_int]
@@ -544,4 +544,4 @@ def remove_padding(data, width, height, bit_width):
     buff = buff.reshape(align_height, align_width)
     buff = buff[:height, :real_width]
     buff = buff.reshape(height * real_width)
-    return buff
\ No newline at end of file
+    return buff
diff --git a/RPI/stereo_depth_demo/arducam_mipicamera.py b/RPI/stereo_depth_demo/arducam_mipicamera.py
index b2b0f3f..65c44de 100644
--- a/RPI/stereo_depth_demo/arducam_mipicamera.py
+++ b/RPI/stereo_depth_demo/arducam_mipicamera.py
@@ -180,8 +180,8 @@ class CAMERA_INTERFACE(Structure):
 arducam_start_preview.restype = c_int
 
 arducam_stop_preview = camera_lib.arducam_stop_preview
-arducam_start_preview.argtypes = [c_void_p]
-arducam_start_preview.restype = c_int
+arducam_stop_preview.argtypes = [c_void_p]
+arducam_stop_preview.restype = c_int
 
 arducam_capture = camera_lib.arducam_capture
 arducam_capture.argtypes = [c_void_p, POINTER(IMAGE_FORMAT), c_int]
@@ -537,4 +537,4 @@ def remove_padding(data, width, height, bit_width):
     buff = buff.reshape(align_height, align_width)
     buff = buff[:height, :real_width]
     buff = buff.reshape(height * real_width)
-    return buff
\ No newline at end of file
+    return buff