diff --git a/app/src/main/java/eu/faircode/email/FragmentCompose.java b/app/src/main/java/eu/faircode/email/FragmentCompose.java
index 2d80fca1ae..34c247d130 100644
--- a/app/src/main/java/eu/faircode/email/FragmentCompose.java
+++ b/app/src/main/java/eu/faircode/email/FragmentCompose.java
@@ -321,7 +321,6 @@ public class FragmentCompose extends FragmentBase {
     // http://regex.info/blog/lightroom-goodies/jpeg-quality
 
     private static final int MAX_QUOTE_LEVEL = 5;
-    private static final float LUMINANCE_THRESHOLD = 0.7f;
 
     private static final int REQUEST_CONTACT_TO = 1;
     private static final int REQUEST_CONTACT_CC = 2;
@@ -7860,9 +7859,9 @@ public class FragmentCompose extends FragmentBase {
                 else {
                     Integer icolor = null;
                     float lum = (float) ColorUtils.calculateLuminance(color);
-                    if (lum > LUMINANCE_THRESHOLD)
+                    if (lum > Helper.BNV_LUMINANCE_THRESHOLD)
                         icolor = Color.BLACK;
-                    else if ((1.0f - lum) > LUMINANCE_THRESHOLD)
+                    else if ((1.0f - lum) > Helper.BNV_LUMINANCE_THRESHOLD)
                         icolor = Color.WHITE;
                     if (icolor == null)
                         itemColor = ContextCompat.getColorStateList(context, R.color.action_foreground);
diff --git a/app/src/main/java/eu/faircode/email/FragmentMessages.java b/app/src/main/java/eu/faircode/email/FragmentMessages.java
index a8c790ef81..91dd6d428f 100644
--- a/app/src/main/java/eu/faircode/email/FragmentMessages.java
+++ b/app/src/main/java/eu/faircode/email/FragmentMessages.java
@@ -404,7 +404,6 @@ public class FragmentMessages extends FragmentBase
 
     private static final int MAX_MORE = 100; // messages
     private static final int MAX_SEND_RAW = 50; // messages
-    private static final float LUMINANCE_THRESHOLD = 0.7f;
     private static final int ITEM_CACHE_SIZE = 10; // Default: 2 items
 
     private static final int REQUEST_RAW = 1;
@@ -7360,9 +7359,9 @@ public class FragmentMessages extends FragmentBase
 
                         Integer itemColor = null;
                         float lum = (float) ColorUtils.calculateLuminance(color);
-                        if (lum > LUMINANCE_THRESHOLD)
+                        if (lum > Helper.BNV_LUMINANCE_THRESHOLD)
                             itemColor = Color.BLACK;
-                        else if ((1.0f - lum) > LUMINANCE_THRESHOLD)
+                        else if ((1.0f - lum) > Helper.BNV_LUMINANCE_THRESHOLD)
                             itemColor = Color.WHITE;
 
                         if (itemColor != null)
diff --git a/app/src/main/java/eu/faircode/email/Helper.java b/app/src/main/java/eu/faircode/email/Helper.java
index 2f4dbca3d4..53f4eb2407 100644
--- a/app/src/main/java/eu/faircode/email/Helper.java
+++ b/app/src/main/java/eu/faircode/email/Helper.java
@@ -199,6 +199,7 @@ public class Helper {
     static final int AUTH_AUTOLOCK_GRACE = 15; // seconds
     static final int PIN_FAILURE_DELAY = 3; // seconds
     static final long PIN_FAILURE_DELAY_MAX = 20 * 60 * 1000L; // milliseconds
+    static final float BNV_LUMINANCE_THRESHOLD = 0.7f;
 
     static final String PGP_OPENKEYCHAIN_PACKAGE = "org.sufficientlysecure.keychain";
     static final String PGP_BEGIN_MESSAGE = "-----BEGIN PGP MESSAGE-----";