diff --git a/src/function_entry.rs b/src/function_entry.rs
index 6f66ebc..e9b0910 100644
--- a/src/function_entry.rs
+++ b/src/function_entry.rs
@@ -276,18 +276,14 @@ impl FunctionEntry {
 
 		let mut partial_regen = false;
 
-		let overlaps = if self.back_data.is_empty() {
-			false
-		} else {
-			let prev_min = unsafe { self.back_data.first().unwrap_unchecked() }.x;
-			let prev_max = unsafe { self.back_data.first().unwrap_unchecked() }.x;
-			(settings.min_x <= prev_max) && (settings.max_x >= prev_min)
-		};
-
 		if width_changed {
 			self.invalidate_back();
 			self.invalidate_derivative();
-		} else if min_max_changed && !self.back_data.is_empty() && !did_zoom && overlaps {
+		} else if min_max_changed && !self.back_data.is_empty() && !did_zoom && {
+			let prev_min = unsafe { self.back_data.first().unwrap_unchecked() }.x;
+			let prev_max = unsafe { self.back_data.first().unwrap_unchecked() }.x;
+			(settings.min_x <= prev_max) && (settings.max_x >= prev_min)
+		} {
 			partial_regen = true;
 			let prev_min = unsafe { self.back_data.first().unwrap_unchecked() }.x;