diff --git a/deps/zlib/gzread.c b/deps/zlib/gzread.c
index 461deb104e..b304b4eb15 100644
--- a/deps/zlib/gzread.c
+++ b/deps/zlib/gzread.c
@@ -249,7 +249,7 @@ local int gz_fetch(gz_statep state)
 /* Skip len uncompressed bytes of output.  Return -1 on error, 0 on success. */
 local int gz_skip(gz_statep state, z_off64_t len)
 {
-   unsigned n = 0;
+   unsigned n;
 
    /* skip over len bytes or reach end-of-file, whichever comes first */
    while (len)
diff --git a/deps/zlib/gzwrite.c b/deps/zlib/gzwrite.c
index 9bf36d4b87..6c1c91bf0f 100644
--- a/deps/zlib/gzwrite.c
+++ b/deps/zlib/gzwrite.c
@@ -132,7 +132,7 @@ local int gz_comp(gz_statep state, int flush)
 local int gz_zero(gz_statep state, z_off64_t len)
 {
     int first;
-    unsigned n     = 0;
+    unsigned n;
     z_streamp strm = &(state->strm);
 
     /* consume whatever's left in the input buffer */