diff --git a/backends/implot_impl_opengl3.cpp b/backends/implot_impl_opengl3.cpp
index 08df575..f117c24 100644
--- a/backends/implot_impl_opengl3.cpp
+++ b/backends/implot_impl_opengl3.cpp
@@ -61,8 +61,8 @@ struct HeatmapData
 	HeatmapData() {
 		glGenTextures(1, &HeatmapTexID);
 		glBindTexture(GL_TEXTURE_2D, HeatmapTexID);
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		glBindTexture(GL_TEXTURE_2D, 0);
 	}
 };