diff --git a/src/lib/passphrase.c b/src/lib/passphrase.c
index 87e75a20aae..5cb2261024c 100644
--- a/src/lib/passphrase.c
+++ b/src/lib/passphrase.c
@@ -57,7 +57,7 @@ char *generate_crypto_passphrase(int length)
    char valid_chars[] = "abcdefghijklmnopqrstuvwxyz"
                         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                         "0123456789"
-                        "!@#$%^&*()-_=+|\\[]{};:,.<>?/~";
+                        "!@#$%^&*()-_=+|[]{};:,.<>?/~";
 
    rand_bytes = (unsigned char *)malloc(length);
    passphrase = (char *)malloc(length);
@@ -124,7 +124,7 @@ char *generate_crypto_passphrase(int length)
    char valid_chars[] = "abcdefghijklmnopqrstuvwxyz"
                         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                         "0123456789"
-                        "!@#$%^&*()-_=+|\\[]{};:,.<>?/~";
+                        "!@#$%^&*()-_=+|[]{};:,.<>?/~";
 
    rand_bytes = (int *)malloc(length * sizeof(int));
    passphrase = (char *)malloc(length);