diff --git a/Dockerfile.test-libgit2-only b/Dockerfile.test-libgit2-only
index 25cf589..6201cec 100644
--- a/Dockerfile.test-libgit2-only
+++ b/Dockerfile.test-libgit2-only
@@ -129,6 +129,5 @@ COPY --from=build \
     /root/smoketest/static-test-runner .
 
 ENV SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
-ENV ALLOW_THREADLESS_LIBGIT2=true
 
 RUN /root/smoketest/static-test-runner
diff --git a/Makefile b/Makefile
index 3b6909f..8f8a3b9 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,6 @@ export LIBRARY_PATH=$(LIBGIT2_LIB_PATH)
 export PKG_CONFIG_PATH=$(LIBGIT2_LIB_PATH)/pkgconfig
 export CGO_LDFLAGS=$(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) pkg-config --libs --static --cflags libgit2)
 export CGO_CFLAGS=-I$(LIBGIT2_PATH)/include
-export ALLOW_THREADLESS_LIBGIT2=true
 
 GO_STATIC_FLAGS=-tags 'netgo,osusergo,static_build'