diff --git a/src/grovers_visualizer/plot.py b/src/grovers_visualizer/plot.py
index e5788a5..76bddd6 100644
--- a/src/grovers_visualizer/plot.py
+++ b/src/grovers_visualizer/plot.py
@@ -9,7 +9,7 @@ from matplotlib.patches import Circle
 from qiskit.quantum_info import Statevector
 
 from .state import QubitState
-from .utils import get_bar_color, is_optimal_iteration, sign
+from .utils import get_bar_color, is_optimal_iteration
 
 
 def plot_amplitudes(
@@ -87,7 +87,7 @@ def plot_circle(
     ax.text(
         x,
         y,
-        f"{prob * sign(y):.2f}",
+        f"{prob:.2f}",
         color=color,
         fontsize=10,
         ha="left" if x >= 0 else "right",
diff --git a/src/grovers_visualizer/utils.py b/src/grovers_visualizer/utils.py
index 419c7c6..4b7e82f 100644
--- a/src/grovers_visualizer/utils.py
+++ b/src/grovers_visualizer/utils.py
@@ -1,6 +1,6 @@
 from collections.abc import Iterator
 from itertools import product
-from math import copysign, floor, pi, sqrt
+from math import floor, pi, sqrt
 
 from .state import QubitState
 
@@ -27,7 +27,3 @@ def get_bar_color(state: str, target_state: QubitState | None, iteration: int, o
     if optimal_iteration and is_optimal_iteration(iteration, optimal_iteration):
         return "green"
     return "orange"
-
-
-def sign(x: float) -> int:
-    return int(copysign(1, x))