diff --git a/src/scores.cpp b/src/scores.cpp
index 424df7b8..708b360a 100644
--- a/src/scores.cpp
+++ b/src/scores.cpp
@@ -1,6 +1,6 @@
 #include "scores.h"
 
-int piece_values[2][6] = { { 98, 337, 365, 477, 1025, 0}, { 114, 281, 297, 512,  936, 0} };
+int piece_values[2][7] = { { 98, 337, 365, 477, 1025, 0, 0}, { 114, 281, 297, 512,  936, 0, 0} };
 
 int killerscore1 = 6'000'000;
 int killerscore2 = 5'000'000;
diff --git a/src/scores.h b/src/scores.h
index 2e0748a8..2ac2b345 100644
--- a/src/scores.h
+++ b/src/scores.h
@@ -3,7 +3,7 @@
 
 #include <cmath>
 
-extern int piece_values[2][6];
+extern int piece_values[2][7];
 
 extern int killerscore1;
 extern int killerscore2;