1 files changed, 1 insertions, 1 deletions
diff --git a/src/nvim/os/env.c b/src/nvim/os/env.c
index 0d4452662d..8a81f6e928 100644
--- a/src/nvim/os/env.c
+++ b/src/nvim/os/env.c
@@ -726,7 +726,7 @@ void expand_env_esc(char *restrict srcp, char *restrict dst, int dstlen, bool es
         // with it, skip a character
         if (after_pathsep(dst, dst + c)
 #if defined(BACKSLASH_IN_FILENAME)
-            && dst[-1] != ':'
+            && dst[c - 1] != ':'
 #endif
             && vim_ispathsep(*tail)) {
           tail++;