diff --git a/dox/dox.c b/dox/dox.c
index d50061fc..09bee230 100644
--- a/dox/dox.c
+++ b/dox/dox.c
@@ -633,7 +633,8 @@ main(int argc, char **argv)
 	     break;
 
 	  case MotionNotify:
-	     while (XCheckTypedEvent(disp, ev.type, &ev));
+	     while (XCheckTypedEvent(disp, ev.type, &ev))
+		;
 	     {
 		static Link        *pl = NULL;
 		char                found = 0;
diff --git a/epp/cpphash.c b/epp/cpphash.c
index 2b14bdd7..d9751c09 100644
--- a/epp/cpphash.c
+++ b/epp/cpphash.c
@@ -65,7 +65,8 @@ cpp_lookup(const char *name, int len, int hash)
 
    if (len < 0)
      {
-	for (bp = name; IS_IDCHAR(*bp); bp++);
+	for (bp = name; IS_IDCHAR(*bp); bp++)
+	   ;
 	len = bp - name;
      }
    if (hash < 0)
diff --git a/epp/cpplib.c b/epp/cpplib.c
index 05159b49..88bb4e98 100644
--- a/epp/cpplib.c
+++ b/epp/cpplib.c
@@ -607,7 +607,8 @@ cpp_define(cpp_reader * pfile, unsigned char *str)
 	cpp_error(pfile, "malformed option `-D %s'", str);
 	return;
      }
-   while (is_idchar[*++p]);
+   while (is_idchar[*++p])
+      ;
    if (*p == 0)
      {
 	buf = (unsigned char *)alloca(p - buf + 4);
@@ -670,7 +671,8 @@ make_assertion(cpp_reader * pfile, const char *option, const char *str)
 	cpp_error(pfile, "malformed option `%s %s'", option, str);
 	return;
      }
-   while (is_idchar[*++p]);
+   while (is_idchar[*++p])
+      ;
    while (*p == ' ' || *p == '\t')
       p++;
    if (!(*p == 0 || *p == '('))
@@ -1736,7 +1738,8 @@ check_macro_name(cpp_reader * pfile, unsigned char *symname, const char *usage)
    unsigned char      *p;
    int                 sym_length;
 
-   for (p = symname; is_idchar[*p]; p++);
+   for (p = symname; is_idchar[*p]; p++)
+      ;
    sym_length = p - symname;
    if (sym_length == 0)
      {