1 files changed, 4 insertions, 4 deletions

diff --git a/inffast.c b/inffast.c
index 9354676..f7b550b 100644
--- a/inffast.c
+++ b/inffast.c
@@ -155,7 +155,7 @@ void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
                 dist += (unsigned)hold & ((1U << op) - 1);
 #ifdef INFLATE_STRICT
                 if (dist > dmax) {
-                    strm->msg = (char *)"invalid distance too far back";
+                    strm->msg = (z_const char *)"invalid distance too far back";
                     state->mode = BAD;
                     break;
                 }
@@ -169,7 +169,7 @@ void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
                     if (op > whave) {
                         if (state->sane) {
                             strm->msg =
-                                (char *)"invalid distance too far back";
+                                (z_const char *)"invalid distance too far back";
                             state->mode = BAD;
                             break;
                         }
@@ -265,7 +265,7 @@ void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
                 goto dodist;
             }
             else {
-                strm->msg = (char *)"invalid distance code";
+                strm->msg = (z_const char *)"invalid distance code";
                 state->mode = BAD;
                 break;
             }
@@ -280,7 +280,7 @@ void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
             break;
         }
         else {
-            strm->msg = (char *)"invalid literal/length code";
+            strm->msg = (z_const char *)"invalid literal/length code";
             state->mode = BAD;
             break;
         }