diff --git a/cmd/shfmt/Dockerfile b/cmd/shfmt/Dockerfile
index f41f768ed..9dd86dd52 100644
--- a/cmd/shfmt/Dockerfile
+++ b/cmd/shfmt/Dockerfile
@@ -3,7 +3,7 @@ FROM golang:1.18.2-alpine AS build
 WORKDIR /src
 RUN apk add --no-cache git
 COPY . .
-RUN CGO_ENABLED=0 go build -ldflags "-w -s -extldflags '-static' -X main.knownVersion=$(git describe --always --dirty --tags)" ./cmd/shfmt
+RUN CGO_ENABLED=0 go build -ldflags "-w -s -extldflags '-static' -X main.version=$(git describe --always --dirty --tags)" ./cmd/shfmt
 
 FROM alpine:3.15.4 AS alpine
 COPY --from=build /src/shfmt /bin/shfmt