diff --git a/src/internal/slibtool_lconf_impl.c b/src/internal/slibtool_lconf_impl.c
index 102a2b6..c7d2fd3 100644
--- a/src/internal/slibtool_lconf_impl.c
+++ b/src/internal/slibtool_lconf_impl.c
@@ -698,7 +698,7 @@ static int slbt_get_lconf_var(
 		else if ((*mark == '.') || (*mark == '_'))
 			(void)0;
 
-		else if (*mark == space)
+		else if ((*mark == ':') || (*mark == space))
 			(void)0;
 
 		else