diff --git a/Docker/build.sh b/Docker/build.sh
index 297f104..cf34b96 100755
--- a/Docker/build.sh
+++ b/Docker/build.sh
@@ -1,5 +1,6 @@
 rm ./sist2
 cp ../sist2 .
+strip sist2
 
 version=$(./sist2 --version)
 
diff --git a/src/main.c b/src/main.c
index c622aac..4a8f27f 100644
--- a/src/main.c
+++ b/src/main.c
@@ -10,7 +10,7 @@
 #define EPILOG "Made by simon987 <me@simon987.net>. Released under GPL-3.0"
 
 
-static const char *const Version = "1.1.14";
+static const char *const Version = "1.1.15";
 static const char *const usage[] = {
         "sist2 scan [OPTION]... PATH",
         "sist2 index [OPTION]... INDEX",
diff --git a/src/util.h b/src/util.h
index 64fd833..15512db 100644
--- a/src/util.h
+++ b/src/util.h
@@ -7,7 +7,7 @@
 #define INITIAL_BUF_SIZE 1024 * 16
 
 #define SHOULD_IGNORE_CHAR(c) !(SHOULD_KEEP_CHAR(c))
-#define SHOULD_KEEP_CHAR(c) (c >= (int)'!')
+#define SHOULD_KEEP_CHAR(c) ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'z') || (c > 127))
 
 
 typedef struct dyn_buffer {
diff --git a/web/search.html b/web/search.html
index b7aba88..bef8b47 100644
--- a/web/search.html
+++ b/web/search.html
@@ -11,7 +11,7 @@
 
 <nav class="navbar navbar-expand-lg">
     <a class="navbar-brand" href="/">sist2</a>
-    <span class="badge badge-pill version">v1.1.14</span>
+    <span class="badge badge-pill version">v1.1.15</span>
     <span class="tagline">Lightning-fast file system indexer and search tool </span>
     <a style="margin-left: auto" id="theme" class="btn" title="Toggle theme" href="/">Theme</a>
 </nav>