diff --git a/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp b/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp
index 31e4943000526b4d90c40094df54ff24d38b17e8..f25f6ba02dc5808d14feb618f77cac8ee562d589 100644
--- a/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp
+++ b/Source/StudyFrameworkPlugin/Private/GazeTracking/SFGazeTracker.cpp
@@ -252,9 +252,7 @@ FString USFGazeTracker::GetCurrentGazeTarget()
 			break;
 		}
 	}
-
-
-
+	
 	return "";
 }
 
@@ -294,7 +292,7 @@ bool USFGazeTracker::LaunchCalibration()
 	return false;
 }
 
-bool USFGazeTracker::IsTrackingEyes()
+bool USFGazeTracker::IsTrackingEyes() const
 {
 	if (!bEyeTrackingStarted)
 		return false;
@@ -318,7 +316,7 @@ bool USFGazeTracker::IsTrackingEyes()
 	return false;
 }
 
-float USFGazeTracker::GetEyesOpenness()
+float USFGazeTracker::GetEyesOpenness() const
 {
 	if (!IsTrackingEyes())
 	{
diff --git a/Source/StudyFrameworkPlugin/Public/GazeTracking/SFGazeTracker.h b/Source/StudyFrameworkPlugin/Public/GazeTracking/SFGazeTracker.h
index 38de76344b294e38547d80948684c26ccfdd221d..a07d360b711fbd39dfa1e11ed6b9209814611d7d 100644
--- a/Source/StudyFrameworkPlugin/Public/GazeTracking/SFGazeTracker.h
+++ b/Source/StudyFrameworkPlugin/Public/GazeTracking/SFGazeTracker.h
@@ -67,12 +67,12 @@ public:
 
 	//whether currently the eyes are tracked, otherwise head-forward is used (this can change during execution if the HMD is taken off etc.)
 	UFUNCTION(BlueprintCallable)
-	bool IsTrackingEyes();
+	bool IsTrackingEyes() const;
 
 	// a value (mean of both eyes), how open the eyes are from 0.0 (fully closed), to 1.0 (fully opened), extreme values might not be reached
 	// returns -1.0 if the eyes are not tracked or not value can be estimated
 	UFUNCTION(BlueprintCallable)
-	float GetEyesOpenness();
+	float GetEyesOpenness() const;
 
 	bool DataAlreadyLogged();
 	void SetDataLogged();
diff --git a/Source/StudyFrameworkPlugin/Public/SFStudySetup.h b/Source/StudyFrameworkPlugin/Public/SFStudySetup.h
index 5970bfbd8df55ba91500917bce9f537a59167aff..0fa3e4d8a956190b83ad5bc1c3251f4ebec6d1ab 100644
--- a/Source/StudyFrameworkPlugin/Public/SFStudySetup.h
+++ b/Source/StudyFrameworkPlugin/Public/SFStudySetup.h
@@ -94,7 +94,7 @@ public:
 	UPROPERTY(BlueprintReadOnly, EditAnywhere, Instanced, meta = (TitleProperty = "Name", Category = "Study Setup"))
 	TArray<USFIndependentVariable*> IndependentVariables;
 
-	//give names of phases wich should be randomized in their order between participants
+	//give names of phases which should be randomized in their order between participants
 	UPROPERTY(BlueprintReadOnly, EditAnywhere, meta = (Category = "Study Setup"))
 	TArray<FString> PhasesToOrderRandomize;