diff --git a/proc/ksym.c b/proc/ksym.c
index 4549ffaa..2aef56b5 100644
--- a/proc/ksym.c
+++ b/proc/ksym.c
@@ -224,7 +224,7 @@ open_again:
     default:     _exit(101);
     case EACCES:   /* somebody screwing around? */
       /* FIXME: set a flag to disable symbol lookup? */
-    case ENOENT:   /* no module support */
+    case ENOENT:;  /* no module support */
     }
     goto hell;
   }
diff --git a/ps/display.c b/ps/display.c
index 1ad27b83..79206809 100644
--- a/ps/display.c
+++ b/ps/display.c
@@ -327,6 +327,7 @@ static void show_forest(const int n){
     }
     show_tree(i,n,0,0);
 not_root:
+    ;
   }
   /* don't free the array because it takes time and ps will exit anyway */
 }
@@ -379,6 +380,7 @@ int main(int argc, char *argv[]){
     case SIGKILL:  /* can not catch */
     case SIGSTOP:  /* can not catch */
     case SIGWINCH: /* don't care if window size changes */
+      ;
     }
   } while (0);
 #endif
diff --git a/ps/parser.c b/ps/parser.c
index 1e92be24..5a7e0125 100644
--- a/ps/parser.c
+++ b/ps/parser.c
@@ -699,6 +699,7 @@ static const char *grab_gnu_arg(void){
     if(*++flagptr) return flagptr;   /* found it */
     return NULL;                     /* empty '=' or ':' */
   case '\0': /* try next argv[] */
+    ;
   }
   if(thisarg+2 > ps_argc) return NULL;   /* there is nothing left */
   /* argument follows ps_argv[thisarg] */
diff --git a/ps/sortformat.c b/ps/sortformat.c
index aff90e4e..c6f7e64d 100644
--- a/ps/sortformat.c
+++ b/ps/sortformat.c
@@ -140,6 +140,7 @@ static const char *aix_format_parse(sf_node *sfn){
     if(c)         goto initial;
     return "Improper AIX field descriptor.";
   looks_ok:
+    ;
   }
 
   /*** sanity check passed ***/