diff --git a/mcstas-comps/examples/Tests_samples/Samples_Phonon/Samples_Phonon.instr b/mcstas-comps/examples/Tests_samples/Samples_Phonon/Samples_Phonon.instr
index 537023ac7c..a225e23f60 100644
--- a/mcstas-comps/examples/Tests_samples/Samples_Phonon/Samples_Phonon.instr
+++ b/mcstas-comps/examples/Tests_samples/Samples_Phonon/Samples_Phonon.instr
@@ -17,7 +17,7 @@
 * Simple test instrument for the Phonon_simple component.
 * Refer to the component documentation for further instructions.
 *
-* %Example: E=10 -n 1e5 Detector: mon1_I=4.9e-25
+* %Example: E=10 -n 1e5 Detector: mon1_I=2.86265e-25
 *
 * %Parameters
 * E:    [meV] Mean energy at source   
diff --git a/mcstas-comps/samples/Phonon_simple.comp b/mcstas-comps/samples/Phonon_simple.comp
index 557205eb10..d11400a7a7 100644
--- a/mcstas-comps/samples/Phonon_simple.comp
+++ b/mcstas-comps/samples/Phonon_simple.comp
@@ -319,9 +319,9 @@ double zridd_gpu(double x1, double x2, struct neutron_params *neutron, struct ph
 
     // Then in energy gain for the neutron
     for (int i=0; i<phonon->e_steps_high_; i++){
-      root = zridd(f, brack_low+range_high*i/ phonon->e_steps_high_,
-		   brack_low+range_high*(i+1)/ phonon->e_steps_high_,
-		   neutron, phonon, ROOTACC);
+      root = zridd(f, brack_mid+range_high*i/ phonon->e_steps_high_,
+		           brack_mid+range_high*(i+1)/ phonon->e_steps_high_,
+		           neutron, phonon, ROOTACC);
       if (root != UNUSED){
 	list[(*index)++]=root;
       }
@@ -348,9 +348,9 @@ double zridd_gpu(double x1, double x2, struct neutron_params *neutron, struct ph
 
     // Then in energy gain for the neutron
     for (int i=0; i<phonon->e_steps_high_; i++){
-      root = zridd_gpu(brack_low+range_high*i/ phonon->e_steps_high_,
-		       brack_low+range_high*(i+1)/ phonon->e_steps_high_,
-		       neutron, phonon, ROOTACC);
+      root = zridd_gpu(brack_mid+range_high*i/ phonon->e_steps_high_,
+		               brack_mid+range_high*(i+1)/ phonon->e_steps_high_,
+		               neutron, phonon, ROOTACC);
       if (root != UNUSED){
 	list[(*index)++]=root;
       }