diff --git a/Makefile b/Makefile
index ad0217b969d..a355435f3b0 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@ GIT_TAG ?= dirty-tag
 GIT_VERSION ?= $(shell git describe --tags --always --dirty)
 GIT_HASH ?= $(shell git rev-parse HEAD)
 DATE_FMT = +%Y-%m-%dT%H:%M:%SZ
-SOURCE_DATE_EPOCH ?= $(shell git log -1 --pretty=%ct)
+SOURCE_DATE_EPOCH ?= $(shell git log -1 --no-show-signature --pretty=%ct)
 ifdef SOURCE_DATE_EPOCH
     BUILD_DATE ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" "$(DATE_FMT)" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" "$(DATE_FMT)" 2>/dev/null || date -u "$(DATE_FMT)")
 else