diff --git a/src/callback.c b/src/callback.c
index 18150270..b2bc5847 100644
--- a/src/callback.c
+++ b/src/callback.c
@@ -3858,10 +3858,10 @@ static void handle_key_press(int event, KeySym key, int state, int rstate, int m
         xctx->semaphore = save;
       }
 #ifndef __unix__
-      else if(state == ShiftMask) { 
+      else if(state == ShiftMask) {
         int save = xctx->semaphore;
         if(xctx->semaphore >= 2) break;
-        xctx->semaphore = 0; 
+        xctx->semaphore = 0;
         tcleval("next_tab");
         xctx->semaphore = save;
       }
@@ -3892,7 +3892,7 @@ static void handle_key_press(int event, KeySym key, int state, int rstate, int m
       }
 
       break;
-#endif   
+#endif
     case XK_Right:
       if(state == ControlMask) {
         int save = xctx->semaphore;
diff --git a/src/draw.c b/src/draw.c
index 072f6881..d4176adf 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -4250,7 +4250,7 @@ void draw_graph(int i, int flags, Graph_ctx *gr, void *ct)
           my_strdup2(_ALLOC_ID_, &express, ntok_copy);
         }
         dbg(1, "express=|%s|\n", express);
-        
+
         match = strpbrk(express, " \n\t");
         if( match  && (match == express || *(match - 1) != '\\')) {
           expression = 1;
diff --git a/src/editprop.c b/src/editprop.c
index 8448a706..ccef0fdb 100644
--- a/src/editprop.c
+++ b/src/editprop.c
@@ -604,9 +604,9 @@ char *dtoa_eng(double i, int precision)
   else                        { i *= 1e18; suffix = 'a';}
   if(suffix) {
     /* can not use my_snprintf() here due to indirect precision */
-    if(suffix == 'M') 
+    if(suffix == 'M')
       n = sprintf(s, "%.*gMEG", precision, i);
-    else 
+    else
       n = sprintf(s, "%.*g%c", precision, i, suffix);
   } else {
     n = sprintf(s, "%.*g", precision, i);
diff --git a/src/scheduler.c b/src/scheduler.c
index fb1b321c..0af28441 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -1967,7 +1967,7 @@ int xschem(ClientData clientdata, Tcl_Interp *interp, int argc, const char * arg
      *   Get attribute 'attr' of rectangle number 'num' on layer 'layer'
      *
      * getprop text num attr
-     *   Get attribute 'attr' of text number 'num', 'num' can also be the name attribute 
+     *   Get attribute 'attr' of text number 'num', 'num' can also be the name attribute
      *   of the text object
      *   if 'attr' is 'txt_ptr' return the text string
      *