diff --git a/README.md b/README.md
index e5bb66e..9d2ec7a 100644
--- a/README.md
+++ b/README.md
@@ -8,4 +8,5 @@
 
 ### Patches
 
-* [Fuzzymatch](https://tools.suckless.org/dmenu/patches/fuzzymatch/)
+* [fuzzymatch](https://tools.suckless.org/dmenu/patches/fuzzymatch/)
+* [case-insensitive](https://tools.suckless.org/dmenu/patches/case-insensitive/)
diff --git a/dmenu.c b/dmenu.c
index 1307268..122d871 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -56,8 +56,9 @@ static Clr *scheme[SchemeLast];
 
 #include "config.h"
 
-static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
-static char *(*fstrstr)(const char *, const char *) = strstr;
+static char * cistrstr(const char *s, const char *sub);
+static int (*fstrncmp)(const char *, const char *, size_t) = strncasecmp;
+static char *(*fstrstr)(const char *, const char *) = cistrstr;
 
 static unsigned int
 textw_clamp(const char *str, unsigned int n)
@@ -821,9 +822,9 @@ main(int argc, char *argv[])
 			fuzzy = 0;
 		else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 			fast = 1;
-		else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
-			fstrncmp = strncasecmp;
-			fstrstr = cistrstr;
+		else if (!strcmp(argv[i], "-s")) { /* case-sensitive item matching */
+			fstrncmp = strncmp;
+			fstrstr = strstr;
 		} else if (i + 1 == argc)
 			usage();
 		/* these options take one argument */