diff --git a/litex/soc/software/liblitedram/sdram.c b/litex/soc/software/liblitedram/sdram.c
index a8802efb5..aa45e5e21 100644
--- a/litex/soc/software/liblitedram/sdram.c
+++ b/litex/soc/software/liblitedram/sdram.c
@@ -866,6 +866,7 @@ void sdrcal(void)
 /*-----------------------------------------------------------------------*/
 /* Initialization                                                        */
 /*-----------------------------------------------------------------------*/
+int sdrwl_delays[16];
 
 int sdrinit(void)
 {
diff --git a/litex/soc/software/liblitedram/sdram.h b/litex/soc/software/liblitedram/sdram.h
index 0077f4be8..ac1b1fb16 100644
--- a/litex/soc/software/liblitedram/sdram.h
+++ b/litex/soc/software/liblitedram/sdram.h
@@ -31,8 +31,6 @@ void sdrwr(unsigned int addr);
 /* Write Leveling                                                        */
 /*-----------------------------------------------------------------------*/
 
-int sdrwl_delays[16];
-
 void sdrwlon(void);
 void sdrwloff(void);
 int write_level(void);