diff --git a/rtgui/hsvequalizer.cc b/rtgui/hsvequalizer.cc
index 7db76aa9f..f489696d2 100644
--- a/rtgui/hsvequalizer.cc
+++ b/rtgui/hsvequalizer.cc
@@ -109,7 +109,7 @@ void HSVEqualizer::autoOpenCurve ()
     bool active = hshape->openIfNonlinear();
 
     if (!active) {
-        sshape->openIfNonlinear();
+        active = sshape->openIfNonlinear();
     }
 
     if (!active) {
diff --git a/rtgui/labcurve.cc b/rtgui/labcurve.cc
index 13ea00b74..f458fa717 100644
--- a/rtgui/labcurve.cc
+++ b/rtgui/labcurve.cc
@@ -299,31 +299,31 @@ void LCurve::autoOpenCurve ()
     bool active = lshape->openIfNonlinear();
 
     if (!active) {
-        ashape->openIfNonlinear();
+        active = ashape->openIfNonlinear();
     }
 
     if (!active) {
-        bshape->openIfNonlinear();
+        active = bshape->openIfNonlinear();
     }
 
     if (!active) {
-        ccshape->openIfNonlinear();
+        active = ccshape->openIfNonlinear();
     }
 
     if (!active) {
-        chshape->openIfNonlinear();
+        active = chshape->openIfNonlinear();
     }
 
     if (!active) {
-        lhshape->openIfNonlinear();
+        active = lhshape->openIfNonlinear();
     }
 
     if (!active) {
-        hhshape->openIfNonlinear();
+        active = hhshape->openIfNonlinear();
     }
 
     if (!active) {
-        lcshape->openIfNonlinear();
+        active = lcshape->openIfNonlinear();
     }
 
     if (!active) {
diff --git a/rtgui/rgbcurves.cc b/rtgui/rgbcurves.cc
index 75af43508..560ee7e57 100644
--- a/rtgui/rgbcurves.cc
+++ b/rtgui/rgbcurves.cc
@@ -117,7 +117,7 @@ void RGBCurves::autoOpenCurve  ()
     bool active = Rshape->openIfNonlinear();
 
     if (!active) {
-        Gshape->openIfNonlinear();
+        active = Gshape->openIfNonlinear();
     }
 
     if (!active) {