diff --git a/man/rgbasm.1 b/man/rgbasm.1
index 416f3169..805a2ca6 100644
--- a/man/rgbasm.1
+++ b/man/rgbasm.1
@@ -370,10 +370,8 @@ Warn when
 is called with an empty string as its second argument (the substring to replace).
 This warning is enabled by
 .Fl Wall .
-.It Fl Wlarge-constant
+.It Fl Wno-large-constant
 Warn when a constant too large to fit in a signed 32-bit integer is encountered.
-This warning is enabled by
-.Fl Wall .
 .It Fl Wmacro-shift
 Warn when shifting macro arguments past their limits.
 This warning is enabled by
diff --git a/src/asm/warning.cpp b/src/asm/warning.cpp
index 01c7c9ab..94cbfb45 100644
--- a/src/asm/warning.cpp
+++ b/src/asm/warning.cpp
@@ -34,7 +34,7 @@ Diagnostics<WarningLevel, WarningID> warnings = {
         {"empty-data-directive", LEVEL_ALL       },
         {"empty-macro-arg",      LEVEL_EXTRA     },
         {"empty-strrpl",         LEVEL_ALL       },
-        {"large-constant",       LEVEL_ALL       },
+        {"large-constant",       LEVEL_DEFAULT   },
         {"macro-shift",          LEVEL_EXTRA     },
         {"nested-comment",       LEVEL_DEFAULT   },
         {"obsolete",             LEVEL_DEFAULT   },