diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32c4b7e..6261566 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ project (tini C)
 # Config
 set (tini_VERSION_MAJOR 0)
 set (tini_VERSION_MINOR 13)
-set (tini_VERSION_PATCH 1)
+set (tini_VERSION_PATCH 2)
 
 # Build options
 option(MINIMAL "Disable argument parsing and verbose output" OFF)
diff --git a/README.md b/README.md
index ac04321..16615d6 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ In Docker, you will want to use an entrypoint so you don't have to remember
 to manually invoke Tini:
 
     # Add Tini
-    ENV TINI_VERSION v0.13.1
+    ENV TINI_VERSION v0.13.2
     ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
     RUN chmod +x /tini
     ENTRYPOINT ["/tini", "--"]
@@ -63,7 +63,7 @@ The `tini` and `tini-static` binaries are signed using the key `595E85A6B1B4779E
 You can verify their signatures using `gpg` (which you may install using
 your package manager):
 
-    ENV TINI_VERSION v0.13.1
+    ENV TINI_VERSION v0.13.2
     ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
     ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini.asc /tini.asc
     RUN gpg --keyserver ha.pool.sks-keyservers.net --recv-keys 595E85A6B1B4779EA4DAAEC70B588DFF0527A9B7 \
diff --git a/src/tini.c b/src/tini.c
index 1eea84b..60d4d88 100644
--- a/src/tini.c
+++ b/src/tini.c
@@ -306,7 +306,7 @@ int parse_env() {
 #if HAS_SUBREAPER
 int register_subreaper () {
 	if (subreaper > 0) {
-		if (prctl(PR_SET_CHILD_SUBREAPER)) {
+		if (prctl(PR_SET_CHILD_SUBREAPER, 1)) {
 			if (errno == EINVAL) {
 				PRINT_FATAL("PR_SET_CHILD_SUBREAPER is unavailable on this platform. Are you using Linux >= 3.4?")
 			} else {