diff --git a/st.c b/st.c
index 1cdafc1..3f6040e 100644
--- a/st.c
+++ b/st.c
@@ -44,9 +44,6 @@
 #define ESC_ARG_SIZ   16
 #define STR_BUF_SIZ   ESC_BUF_SIZ
 #define STR_ARG_SIZ   ESC_ARG_SIZ
-#if SCROLLBACK_PATCH
-#define HISTSIZE      2000
-#endif // SCROLLBACK_PATCH
 
 /* macros */
 #define IS_SET(flag)    ((term.mode & (flag)) != 0)
diff --git a/st.h b/st.h
index d3fc5c5..2f853ea 100644
--- a/st.h
+++ b/st.h
@@ -32,6 +32,9 @@
 
 #define TRUECOLOR(r,g,b)	(1 << 24 | (r) << 16 | (g) << 8 | (b))
 #define IS_TRUECOL(x)		(1 << 24 & (x))
+#if SCROLLBACK_PATCH
+#define HISTSIZE      2000
+#endif // SCROLLBACK_PATCH
 
 enum glyph_attribute {
 	ATTR_NULL       = 0,