diff --git a/MainPanel.c b/MainPanel.c
index cf7392e4..5a75af3a 100644
--- a/MainPanel.c
+++ b/MainPanel.c
@@ -29,7 +29,7 @@ void MainPanel_updateTreeFunctions(MainPanel* this, bool mode) {
    FunctionBar_setLabel(bar, KEY_F(5), mode ? "List  " : "Tree  ");
 }
 
-void MainPanel_pidSearch(MainPanel* this, int ch) {
+static void MainPanel_pidSearch(MainPanel* this, int ch) {
    Panel* super = (Panel*) this;
    pid_t pid = ch - 48 + this->pidSearch;
    for (int i = 0; i < Panel_size(super); i++) {
diff --git a/MainPanel.h b/MainPanel.h
index 2427ca32..04f347d6 100644
--- a/MainPanel.h
+++ b/MainPanel.h
@@ -34,8 +34,6 @@ typedef bool(*MainPanel_ForeachProcessFn)(Process*, Arg);
 
 void MainPanel_updateTreeFunctions(MainPanel* this, bool mode);
 
-void MainPanel_pidSearch(MainPanel* this, int ch);
-
 int MainPanel_selectedPid(MainPanel* this);
 
 bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged);