diff --git a/doc/configuration.txt b/doc/configuration.txt
index ff90526d8..4242e014e 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -814,6 +814,9 @@ The list of currently supported predicates is the following:
   - defined(<name>)       : returns true if an environment variable <name>
                             exists, regardless of its contents
 
+  - streq(<str1>,<str2>)  : returns true only if the two strings are equal
+  - strneq(<str1>,<str2>) : returns true only if the two strings differ
+
 Example:
 
    .if defined(HAPROXY_MWORKER)
@@ -822,6 +825,14 @@ Example:
           ...
    .endif
 
+   .if strneq("$SSL_ONLY",yes)
+          bind :80
+   .endif
+
+   .if streq("$WITH_SSL",yes)
+          bind :443 ssl crt ...
+   .endif
+
 Three other directives are provided to report some status:
 
   - .notice "message"  : emit this message at level NOTICE
diff --git a/src/cfgparse.c b/src/cfgparse.c
index d8ba76a8b..9daac06c2 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -137,6 +137,8 @@ enum nested_cond_state {
 enum cond_predicate {
 	CFG_PRED_NONE,            // none
 	CFG_PRED_DEFINED,         // "defined"
+	CFG_PRED_STREQ,           // "streq"
+	CFG_PRED_STRNEQ,          // "strneq"
 };
 
 struct cond_pred_kw {
@@ -148,6 +150,8 @@ struct cond_pred_kw {
 /* supported condition predicates */
 const struct cond_pred_kw cond_predicates[] = {
 	{ "defined",          CFG_PRED_DEFINED,         ARG1(1, STR)         },
+	{ "streq",            CFG_PRED_STREQ,           ARG2(2, STR, STR)    },
+	{ "strneq",           CFG_PRED_STRNEQ,          ARG2(2, STR, STR)    },
 	{ NULL, CFG_PRED_NONE, 0 }
 };
 
@@ -1718,6 +1722,14 @@ static int cfg_eval_condition(char **args, char **err, const char **errptr)
 			ret = getenv(argp[0].data.str.area) != NULL;
 			goto done;
 
+		case CFG_PRED_STREQ:    // checks if the two arg are equal
+			ret = strcmp(argp[0].data.str.area, argp[1].data.str.area) == 0;
+			goto done;
+
+		case CFG_PRED_STRNEQ:   // checks if the two arg are different
+			ret = strcmp(argp[0].data.str.area, argp[1].data.str.area) != 0;
+			goto done;
+
 		default:
 			memprintf(err, "internal error: unhandled conditional expression predicate '%s'", cond_pred->word);
 			if (errptr)