diff --git a/src/puresize.h b/src/puresize.h
index e6319ff2d21..b37ab977ac3 100644
--- a/src/puresize.h
+++ b/src/puresize.h
@@ -47,7 +47,7 @@ INLINE_HEADER_BEGIN
 #endif
 
 #ifndef BASE_PURESIZE
-#define BASE_PURESIZE (1900000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA)
+#define BASE_PURESIZE (2000000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA)
 #endif
 
 /* Increase BASE_PURESIZE by a ratio depending on the machine's word size.  */