diff --git a/dclib/dclib-basics.c b/dclib/dclib-basics.c
index 4a338e0..f1a6ada 100644
--- a/dclib/dclib-basics.c
+++ b/dclib/dclib-basics.c
@@ -4603,7 +4603,7 @@ enumError Command_TESTCOLORS ( int argc, char ** argv )
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-u32 ColorTab_M0_M15[16] =
+extern u32 ColorTab_M0_M15[16] =
 {
 	0x000000, 0x800000, 0x008000, 0x808000,
 	0x000080, 0x800080, 0x008080, 0xc0c0c0,
diff --git a/dclib/dclib-color.h b/dclib/dclib-color.h
index 552cbb3..799af91 100644
--- a/dclib/dclib-color.h
+++ b/dclib/dclib-color.h
@@ -535,7 +535,7 @@ void PrintColorSetHelper
 ///////////////			color helpers			///////////////
 ///////////////////////////////////////////////////////////////////////////////
 
-u32 ColorTab_M0_M15[16]; // first 16 colors of "\e[m"
+extern u32 ColorTab_M0_M15[16]; // first 16 colors of "\e[m"
 
 // return a m256 index
 u8 ConvertColorRGB3ToM256 ( u8 r, u8 g, u8 b );