diff --git a/navMesh/meshPlotter.h b/navMesh/meshPlotter.h
new file mode 100644
index 0000000..df1bc5f
--- /dev/null
+++ b/navMesh/meshPlotter.h
@@ -0,0 +1,4 @@
+#ifndef MESHPLOTTER_H
+#define MESHPLOTTER_H
+
+#endif // MESHPLOTTER_H
diff --git a/smc/filtering/ParticleFilter.h b/smc/filtering/ParticleFilter.h
index c228480..9987908 100644
--- a/smc/filtering/ParticleFilter.h
+++ b/smc/filtering/ParticleFilter.h
@@ -171,9 +171,9 @@ namespace SMC {
 		State updateEvaluationOnly(const Observation& observation) {
 
 			// sanity checks (if enabled)
-            Assert::isNotNull(resampler, "resampler MUST not be null! call setResampler() first!");
+                        Assert::isNotNull(resampler, "resampler MUST not be null! call setResampler() first!");
 			Assert::isNotNull(evaluation, "evaluation MUST not be null! call setEvaluation() first!");
-            Assert::isNotNull(estimation, "estimation MUST not be null! call setEstimation() first!");
+                        Assert::isNotNull(estimation, "estimation MUST not be null! call setEstimation() first!");
 
 			// perform the evaluation step and calculate the sum of all particle weights
 			evaluation->evaluation(particles, observation);
@@ -184,13 +184,13 @@ namespace SMC {
 			//Assert::isNotNull(weightSum, "sum of all particle weights (returned from eval) is 0.0!");
 
 			// normalize the particle weights and thereby calculate N_eff
-            const double neff = normalize();
+                        const double neff = normalize();
 
 			// estimate the current state
 			const State est = estimation->estimate(particles);
 
-            // if the number of efficient particles is too low, perform resampling
-            if (neff < particles.size() * nEffThresholdPercent) { resampler->resample(particles); }
+                        // if the number of efficient particles is too low, perform resampling
+                        if (neff < particles.size() * nEffThresholdPercent) { resampler->resample(particles); }
 
 			// done
 			return est;