diff --git a/src/EvenVCO.cpp b/src/EvenVCO.cpp
index 172dd3e..7cf246c 100644
--- a/src/EvenVCO.cpp
+++ b/src/EvenVCO.cpp
@@ -63,7 +63,7 @@ struct EvenVCO : Module {
 		pw = rescale(clamp(pw, -1.f, 1.f), -1.f, 1.f, minPw, 1.f - minPw);
 
 		// Advance phase
-		float deltaPhase = clamp(freq * app()->engine->getSampleTime(), 1e-6f, 0.5f);
+		float deltaPhase = clamp(freq * APP->engine->getSampleTime(), 1e-6f, 0.5f);
 		float oldPhase = phase;
 		phase += deltaPhase;
 
@@ -95,8 +95,8 @@ struct EvenVCO : Module {
 		triSquare += triSquareMinBlep.process();
 
 		// Integrate square for triangle
-		tri += 4.f * triSquare * freq * app()->engine->getSampleTime();
-		tri *= (1.f - 40.f * app()->engine->getSampleTime());
+		tri += 4.f * triSquare * freq * APP->engine->getSampleTime();
+		tri *= (1.f - 40.f * APP->engine->getSampleTime());
 
 		float sine = -std::cos(2*M_PI * phase);
 		float doubleSaw = (phase < 0.5) ? (-1.f + 4.f*phase) : (-1.f + 4.f*(phase - 0.5));
diff --git a/src/Rampage.cpp b/src/Rampage.cpp
index eb1b153..4afe1f2 100644
--- a/src/Rampage.cpp
+++ b/src/Rampage.cpp
@@ -124,7 +124,7 @@ struct Rampage : Module {
 				float riseCv = params[RISE_A_PARAM + c].value - inputs[EXP_CV_A_INPUT + c].value / 10.0 + inputs[RISE_CV_A_INPUT + c].value / 10.0;
 				riseCv = clamp(riseCv, 0.0f, 1.0f);
 				float rise = minTime * std::pow(2.0, riseCv * 10.0);
-				out[c] += shapeDelta(delta, rise, shape) * app()->engine->getSampleTime();
+				out[c] += shapeDelta(delta, rise, shape) * APP->engine->getSampleTime();
 				rising = (in - out[c] > 1e-3);
 				if (!rising) {
 					gate[c] = false;
@@ -135,7 +135,7 @@ struct Rampage : Module {
 				float fallCv = params[FALL_A_PARAM + c].value - inputs[EXP_CV_A_INPUT + c].value / 10.0 + inputs[FALL_CV_A_INPUT + c].value / 10.0;
 				fallCv = clamp(fallCv, 0.0f, 1.0f);
 				float fall = minTime * std::pow(2.0, fallCv * 10.0);
-				out[c] += shapeDelta(delta, fall, shape) * app()->engine->getSampleTime();
+				out[c] += shapeDelta(delta, fall, shape) * APP->engine->getSampleTime();
 				falling = (in - out[c] < -1e-3);
 				if (!falling) {
 					// End of cycle, check if we should turn the gate back on (cycle mode)
@@ -157,7 +157,7 @@ struct Rampage : Module {
 			outputs[FALLING_A_OUTPUT + c].value = (falling ? 10.0 : 0.0);
 			lights[RISING_A_LIGHT + c].setBrightnessSmooth(rising ? 1.0 : 0.0);
 			lights[FALLING_A_LIGHT + c].setBrightnessSmooth(falling ? 1.0 : 0.0);
-			outputs[EOC_A_OUTPUT + c].value = (endOfCyclePulse[c].process(app()->engine->getSampleTime()) ? 10.0 : 0.0);
+			outputs[EOC_A_OUTPUT + c].value = (endOfCyclePulse[c].process(APP->engine->getSampleTime()) ? 10.0 : 0.0);
 			outputs[OUT_A_OUTPUT + c].value = out[c];
 			lights[OUT_A_LIGHT + c].setBrightnessSmooth(out[c] / 10.0);
 		}
diff --git a/src/SlewLimiter.cpp b/src/SlewLimiter.cpp
index ab21187..a449162 100644
--- a/src/SlewLimiter.cpp
+++ b/src/SlewLimiter.cpp
@@ -42,7 +42,7 @@ struct SlewLimiter : Module {
 		if (in > out) {
 			float rise = inputs[RISE_INPUT].value / 10.f + params[RISE_PARAM].value;
 			float slew = slewMax * powf(slewMin / slewMax, rise);
-			out += slew * crossfade(1.f, shapeScale * (in - out), shape) * app()->engine->getSampleTime();
+			out += slew * crossfade(1.f, shapeScale * (in - out), shape) * APP->engine->getSampleTime();
 			if (out > in)
 				out = in;
 		}
@@ -50,7 +50,7 @@ struct SlewLimiter : Module {
 		else if (in < out) {
 			float fall = inputs[FALL_INPUT].value / 10.f + params[FALL_PARAM].value;
 			float slew = slewMax * powf(slewMin / slewMax, fall);
-			out -= slew * crossfade(1.f, shapeScale * (out - in), shape) * app()->engine->getSampleTime();
+			out -= slew * crossfade(1.f, shapeScale * (out - in), shape) * APP->engine->getSampleTime();
 			if (out < in)
 				out = in;
 		}
diff --git a/src/SpringReverb.cpp b/src/SpringReverb.cpp
index d35782a..ea37851 100644
--- a/src/SpringReverb.cpp
+++ b/src/SpringReverb.cpp
@@ -74,7 +74,7 @@ struct SpringReverb : Module {
 		float dry = in1 * level1 + in2 * level2;
 
 		// HPF on dry
-		float dryCutoff = 200.0 * std::pow(20.0, params[HPF_PARAM].value) * app()->engine->getSampleTime();
+		float dryCutoff = 200.0 * std::pow(20.0, params[HPF_PARAM].value) * APP->engine->getSampleTime();
 		dryFilter.setCutoff(dryCutoff);
 		dryFilter.process(dry);
 
@@ -91,7 +91,7 @@ struct SpringReverb : Module {
 			float output[BLOCK_SIZE];
 			// Convert input buffer
 			{
-				inputSrc.setRates(app()->engine->getSampleRate(), 48000);
+				inputSrc.setRates(APP->engine->getSampleRate(), 48000);
 				int inLen = inputBuffer.size();
 				int outLen = BLOCK_SIZE;
 				inputSrc.process(inputBuffer.startData(), &inLen, (dsp::Frame<1>*) input, &outLen);
@@ -103,7 +103,7 @@ struct SpringReverb : Module {
 
 			// Convert output buffer
 			{
-				outputSrc.setRates(48000, app()->engine->getSampleRate());
+				outputSrc.setRates(48000, APP->engine->getSampleRate());
 				int inLen = BLOCK_SIZE;
 				int outLen = outputBuffer.capacity();
 				outputSrc.process((dsp::Frame<1>*) output, &inLen, outputBuffer.endData(), &outLen);
@@ -122,7 +122,7 @@ struct SpringReverb : Module {
 		outputs[MIX_OUTPUT].value = clamp(mix, -10.0f, 10.0f);
 
 		// Set lights
-		float lightRate = 5.0 * app()->engine->getSampleTime();
+		float lightRate = 5.0 * APP->engine->getSampleTime();
 		vuFilter.setRate(lightRate);
 		vuFilter.process(std::abs(wet));
 		lightFilter.setRate(lightRate);