diff --git a/src/internal/slibtool_spawn_impl.h b/src/internal/slibtool_spawn_impl.h
index 3966fcb..1abfbe9 100644
--- a/src/internal/slibtool_spawn_impl.h
+++ b/src/internal/slibtool_spawn_impl.h
@@ -7,6 +7,7 @@
 #include <limits.h>
 #include <unistd.h>
 #include <stdbool.h>
+#include <errno.h>
 #include <sys/wait.h>
 
 #ifndef PATH_MAX
@@ -33,7 +34,6 @@ static inline int slbt_spawn(
 {
 	pid_t	pid;
 
-
 #ifdef SLBT_USE_POSIX_SPAWN
 
 	if (posix_spawnp(
@@ -62,6 +62,7 @@ static inline int slbt_spawn(
 			ectx->program,
 			ectx->argv);
 
+	errno     = 0;
 	ectx->pid = pid;
 
 	if (fwait)