diff --git a/pcb_calculator/CMakeLists.txt b/pcb_calculator/CMakeLists.txt
index 26fc53ac7b..bab8fc3e9d 100644
--- a/pcb_calculator/CMakeLists.txt
+++ b/pcb_calculator/CMakeLists.txt
@@ -8,25 +8,25 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR}
 set(PCB_CALCULATOR_SRCS
     attenuators.cpp
     board_classes_values.cpp
-    pcb_calculator.cpp
-    pcb_calculator_frame.cpp
     colorcode.cpp
     params_read_write.cpp
+    pcb_calculator.cpp
+    pcb_calculator_frame.cpp
     regulators_funct.cpp
     transline_ident.cpp
     tracks_width_versus_current.cpp
+    transline_dlg_funct.cpp
     UnitSelector.cpp
-    transline/transline.cpp
+    attenuators/attenuator_classes.cpp
+    dialogs/pcb_calculator_frame_base.cpp
     transline/c_microstrip.cpp
-    transline/microstrip.cpp
     transline/coplanar.cpp
     transline/coax.cpp
+    transline/microstrip.cpp
     transline/rectwaveguide.cpp
     transline/stripline.cpp
+    transline/transline.cpp
     transline/twistedpair.cpp
-    transline_dlg_funct.cpp
-    dialogs/pcb_calculator_frame_base.cpp
-    attenuators/attenuator_classes.cpp
     )
 
 if(WIN32)
diff --git a/pcb_calculator/tracks_width_versus_current.cpp b/pcb_calculator/tracks_width_versus_current.cpp
index d4893eda1e..400928d66a 100644
--- a/pcb_calculator/tracks_width_versus_current.cpp
+++ b/pcb_calculator/tracks_width_versus_current.cpp
@@ -188,13 +188,13 @@ void PCB_CALCULATOR_FRAME::TW_Init()
     m_TrackLengthValue->SetValue( msg );
 
     // Init formulas text
-    m_htmlWinFormulas->AppendToPage( _( "<br>The formula (from IPC 2221) is:</br><br></br>" ) );
+    m_htmlWinFormulas->AppendToPage( _( "<br><em>The formula (from IPC 2221) is:</em></br>" ) );
     m_htmlWinFormulas->AppendToPage( _( "<br><b>I = K * dT<sup>0.44</sup> * (W*H)<sup>0.725</sup></b></br>" ) );
     m_htmlWinFormulas->AppendToPage( _( "<br>Internal traces : <b>K = 0.024</b></br>" ) );
     m_htmlWinFormulas->AppendToPage( _( "<br>External traces: <b>K = 0.048</b></br>" ) );
 
     m_htmlWinFormulas->AppendToPage( _( "<br>where:</br>" ) );
     m_htmlWinFormulas->AppendToPage( _( "<br><b>I</b> = maximum current in Amps</br>" ) );
-    m_htmlWinFormulas->AppendToPage( _( "<br><b>dT</b> = temperature rise above ambient in \0B0 C</br>" ) );
+    m_htmlWinFormulas->AppendToPage( _( "<br><b>dT</b> = temperature rise above ambient in deg C</br>" ) );
     m_htmlWinFormulas->AppendToPage( _( "<br><b>W,H</b> = Width and Thickness in mils</br>" ) );
 }