diff --git a/src/lib.rs b/src/lib.rs
index 2a7e3a11..98556981 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3718,7 +3718,7 @@ impl Build {
         if let Some(val) = self.env_cache.read().unwrap().get(v).cloned() {
             return val;
         }
-        if self.emit_rerun_if_env_changed && !provided_by_cargo(v) {
+        if self.emit_rerun_if_env_changed && !provided_by_cargo(v) && v != "PATH" {
             self.cargo_output
                 .print_metadata(&format_args!("cargo:rerun-if-env-changed={}", v));
         }