diff --git a/go/analysis/passes/printf/printf.go b/go/analysis/passes/printf/printf.go
index c0265aaf..8f657b1b 100644
--- a/go/analysis/passes/printf/printf.go
+++ b/go/analysis/passes/printf/printf.go
@@ -731,6 +731,7 @@ var printVerbs = []printVerb{
 	{'T', "-", anyType},
 	{'U', "-#", argRune | argInt},
 	{'v', allFlags, anyType},
+	{'w', noFlag, anyType},
 	{'x', sharpNumFlag, argRune | argInt | argString | argPointer},
 	{'X', sharpNumFlag, argRune | argInt | argString | argPointer},
 }
diff --git a/go/analysis/passes/printf/testdata/src/a/a.go b/go/analysis/passes/printf/testdata/src/a/a.go
index 417ca91e..4aeecd56 100644
--- a/go/analysis/passes/printf/testdata/src/a/a.go
+++ b/go/analysis/passes/printf/testdata/src/a/a.go
@@ -63,6 +63,7 @@ func PrintfTests() {
 	var imap map[int]int
 	var fslice []float64
 	var c complex64
+	var err error
 	// Some good format/argtypes
 	fmt.Printf("")
 	fmt.Printf("%b %b %b", 3, i, x)
@@ -96,6 +97,7 @@ func PrintfTests() {
 	fmt.Printf("%T", notstringerv)
 	fmt.Printf("%q", stringerarrayv)
 	fmt.Printf("%v", stringerarrayv)
+	fmt.Printf("%w", err)
 	fmt.Printf("%s", stringerarrayv)
 	fmt.Printf("%v", notstringerarrayv)
 	fmt.Printf("%T", notstringerarrayv)