diff --git a/src/ImageHorizonLibrary/recognition/_recognize_images.py b/src/ImageHorizonLibrary/recognition/_recognize_images.py
index b2ed9d5..d0a2bc4 100644
--- a/src/ImageHorizonLibrary/recognition/_recognize_images.py
+++ b/src/ImageHorizonLibrary/recognition/_recognize_images.py
@@ -12,6 +12,11 @@
 
 class _RecognizeImages(object):
 
+    pixel_ratio = 0.0
+
+    def __get_pixel_ratio(self):
+        self.pixel_ratio = ag.screenshot().size[0]/ag.size().width
+
     def __normalize(self, path):
         if (not self.reference_folder or
                 not isinstance(self.reference_folder, str) or
@@ -203,9 +208,11 @@ def try_locate(ref_image):
         center_point = ag.center(location)
         x = center_point.x
         y = center_point.y
-        if self.has_retina:
-            x = x / 2
-            y = y / 2
+        if self.pixel_ratio == 0.0:
+            self.__get_pixel_ratio()
+        if self.pixel_ratio>1:
+            x = x / self.pixel_ratio
+            y = y / self.pixel_ratio
         return (x, y)
 
     def does_exist(self, reference_image):
diff --git a/tests/atest/calculator.robot b/tests/atest/calculator.robot
index 8fd167d..7b7afe5 100755
--- a/tests/atest/calculator.robot
+++ b/tests/atest/calculator.robot
@@ -1,20 +1,21 @@
 *** Settings ***
-Library    ImageHorizonLibrary    ${CURDIR}${/}reference_images${/}calculator    screenshot_folder=${OUTPUT_DIR}
+Library    ${CURDIR}${/}..${/}..${/}..${/}robotframework-imagehorizonlibrary${/}src${/}ImageHorizonLibrary    ${CURDIR}${/}reference_images${/}calculator    screenshot_folder=${OUTPUT_DIR}
 
 *** Test cases ***
 
 Calculator
     Set Confidence      0.9
-    Launch application    python tests/atest/calculator/calculator.py
+    Launch application    python3 tests/atest/calculator/calculator.py
     ${location1}=    Wait for    inputs_folder     timeout=30
     Click to the above of     ${location1}    20
     Type    1010
     Click to the below of     ${location1}    20
     Type    1001
-    ${location2}=    Locate    or_button.png
+    ${location2}=    Locate    or_button
     Click to the below of     ${location2}    0
     Click to the below of     ${location2}    50
+	Sleep    0.1
     ${result}=    Copy
     Should be equal as integers    ${result}    1011
-    Click Image     close_button.png
+    Click Image     close_button
     [Teardown]    Terminate application
diff --git a/tests/atest/reference_images/calculator/close_button.png b/tests/atest/reference_images/calculator/close_button/close_button.png
similarity index 100%
rename from tests/atest/reference_images/calculator/close_button.png
rename to tests/atest/reference_images/calculator/close_button/close_button.png
diff --git a/tests/atest/reference_images/calculator/close_button/close_button_macos.png b/tests/atest/reference_images/calculator/close_button/close_button_macos.png
new file mode 100644
index 0000000..c7d4ef2
Binary files /dev/null and b/tests/atest/reference_images/calculator/close_button/close_button_macos.png differ
diff --git a/tests/atest/reference_images/calculator/inputs_folder/inputs_macos.png b/tests/atest/reference_images/calculator/inputs_folder/inputs_macos.png
new file mode 100644
index 0000000..6df1a72
Binary files /dev/null and b/tests/atest/reference_images/calculator/inputs_folder/inputs_macos.png differ
diff --git a/tests/atest/reference_images/calculator/or_button.png b/tests/atest/reference_images/calculator/or_button/or_button.png
similarity index 100%
rename from tests/atest/reference_images/calculator/or_button.png
rename to tests/atest/reference_images/calculator/or_button/or_button.png
diff --git a/tests/atest/reference_images/calculator/or_button/or_button_macos.png b/tests/atest/reference_images/calculator/or_button/or_button_macos.png
new file mode 100644
index 0000000..509eeeb
Binary files /dev/null and b/tests/atest/reference_images/calculator/or_button/or_button_macos.png differ