diff --git a/pseudo_util.c b/pseudo_util.c
index 9cafad6..126746f 100644
--- a/pseudo_util.c
+++ b/pseudo_util.c
@@ -1197,7 +1197,7 @@ pseudo_setupenvp(char * const *envp) {
 		}
 	} else {
 		/* keep old value */
-		new_envp[j++] = ld_library_path;
+		new_envp[j++] = strdup(ld_library_path);
 	}
 
 	if (ld_preload) {
@@ -1228,7 +1228,7 @@ pseudo_setupenvp(char * const *envp) {
 	for (i = 0; envp && envp[i]; ++i) {
 		if (STARTSWITH(envp[i], PRELINK_LIBRARIES "=")) continue;
 		if (STARTSWITH(envp[i], PRELINK_PATH "=")) continue;
-		new_envp[j++] = envp[i];
+		new_envp[j++] = strdup(envp[i]);
 	}
 
 	for (i = 0; pseudo_env[i].key; i++) {