diff --git a/core/src/mindustry/graphics/FogRenderer.java b/core/src/mindustry/graphics/FogRenderer.java
index 60807ed8cf..f24b1d10fc 100644
--- a/core/src/mindustry/graphics/FogRenderer.java
+++ b/core/src/mindustry/graphics/FogRenderer.java
@@ -110,7 +110,7 @@ public final class FogRenderer{
         dynamicFog.getTexture().setFilter(TextureFilter.linear);
 
         Draw.shader(Shaders.fog);
-        Draw.color(state.rules.dynamicColor, 0.5f);
+        Draw.color(state.rules.dynamicColor, Float.isNaN(state.rules.dynamicColor.a) ? 0.5f : Math.max(0.5f, state.rules.dynamicColor.a));
         Draw.fbo(dynamicFog.getTexture(), world.width(), world.height(), tilesize);
         //TODO ai check?
         if(state.rules.staticFog){
diff --git a/core/src/mindustry/graphics/MinimapRenderer.java b/core/src/mindustry/graphics/MinimapRenderer.java
index a368cca47b..80892c6242 100644
--- a/core/src/mindustry/graphics/MinimapRenderer.java
+++ b/core/src/mindustry/graphics/MinimapRenderer.java
@@ -195,7 +195,7 @@ public class MinimapRenderer{
             float wf = world.width() * tilesize;
             float hf = world.height() * tilesize;
 
-            Draw.color(state.rules.dynamicColor, 0.5f);
+            Draw.color(state.rules.dynamicColor, Float.isNaN(state.rules.dynamicColor.a) ? 0.5f : Math.max(0.5f, state.rules.dynamicColor.a));
             Draw.rect(Tmp.tr1, wf / 2, hf / 2, wf, hf);
 
             if(state.rules.staticFog){