diff --git a/rtgui/curveeditor.cc b/rtgui/curveeditor.cc
index 65668ee55..8b5f2591a 100644
--- a/rtgui/curveeditor.cc
+++ b/rtgui/curveeditor.cc
@@ -150,3 +150,16 @@ void CurveEditor::updateBackgroundHistogram (LUTu & hist) {
 	// Then call the curve editor group to eventually update the histogram
 	subGroup->updateBackgroundHistogram (this);
 }
+
+// Open up the curve if it has modifications and it's not already opened
+// Returns: is it non-linear?
+bool CurveEditor::openIfNonlinear() {
+    bool nonLinear = tempCurve[0] != subGroup->getValLinear();
+
+    if (nonLinear && !curveType->get_active()) {
+        // Will toggle the event doing the display
+        curveType->set_active( true );
+    }
+
+    return nonLinear;
+}
\ No newline at end of file
diff --git a/rtgui/curveeditor.h b/rtgui/curveeditor.h
index 94632283f..5c6732389 100644
--- a/rtgui/curveeditor.h
+++ b/rtgui/curveeditor.h
@@ -72,6 +72,9 @@ class CurveEditor {
 		bool isUnChanged ();
 		void setUnChanged (bool uc);
 		void updateBackgroundHistogram (LUTu & hist);
+
+        bool openIfNonlinear();  // Open up the curve if it has modifications and it's not already opened
+
 		void setCurve (const std::vector<double>& p);
 		virtual std::vector<double> getCurve () = 0;
 };
diff --git a/rtgui/curveeditorgroup.h b/rtgui/curveeditorgroup.h
index 136f9901b..1a6235522 100644
--- a/rtgui/curveeditorgroup.h
+++ b/rtgui/curveeditorgroup.h
@@ -95,6 +95,7 @@ protected:
 
 public:
 	int getValUnchanged() { return valUnchanged; }
+    int getValLinear() { return valLinear; }
 	virtual void updateBackgroundHistogram (CurveEditor* ce) {}
 	virtual void setColorProvider (ColorProvider* p) = 0;
 
diff --git a/rtgui/hsvequalizer.cc b/rtgui/hsvequalizer.cc
index 15eb35fd4..0b0a1cdff 100644
--- a/rtgui/hsvequalizer.cc
+++ b/rtgui/hsvequalizer.cc
@@ -64,6 +64,11 @@ void HSVEqualizer::read (const ProcParams* pp, const ParamsEdited* pedited) {
 	sshape->setCurve         (pp->hsvequalizer.scurve);
     vshape->setCurve         (pp->hsvequalizer.vcurve);
 	
+    // Open up the first curve if selected
+    bool active = hshape->openIfNonlinear();
+    if (!active) sshape->openIfNonlinear();
+    if (!active) vshape->openIfNonlinear();
+
     enableListener ();
 }
 
diff --git a/rtgui/labcurve.cc b/rtgui/labcurve.cc
index 8fddcefda..c01738f65 100644
--- a/rtgui/labcurve.cc
+++ b/rtgui/labcurve.cc
@@ -132,6 +132,10 @@ void LCurve::read (const ProcParams* pp, const ParamsEdited* pedited) {
 	ashape->setCurve         (pp->labCurve.acurve);
     bshape->setCurve         (pp->labCurve.bcurve);
 
+    // Open up the first curve if selected
+    bool active = lshape->openIfNonlinear();
+    if (!active) ashape->openIfNonlinear();
+    if (!active) bshape->openIfNonlinear();
 
     enableListener ();
 }
diff --git a/rtgui/tonecurve.cc b/rtgui/tonecurve.cc
index 9a77d24ce..c2bfc6b87 100644
--- a/rtgui/tonecurve.cc
+++ b/rtgui/tonecurve.cc
@@ -133,6 +133,8 @@ void ToneCurve::read (const ProcParams* pp, const ParamsEdited* pedited) {
 	saturation->setValue (pp->toneCurve.saturation);
 	shape->setCurve (pp->toneCurve.curve);
 
+    shape->openIfNonlinear();
+
     enableListener ();
 }