diff --git a/src/build/build_options.c b/src/build/build_options.c
index e0e4b4dce..0dd59c381 100644
--- a/src/build/build_options.c
+++ b/src/build/build_options.c
@@ -92,7 +92,7 @@ static void usage(bool full)
 	print_opt("-U <name>", "Remove feature flag <name>.");
 	PRINTF("");
 	print_opt("--about", "Prints a short description of C3.");
-	print_opt("--build-env", "Prints build environment information.");
+	print_opt("--build-env", "Prints build environment information (only valid with in combination with a command such as 'compile').");
 	print_opt("--libdir <dir>", "Add this directory to the c3l library search paths.");
 	print_opt("--lib <name>", "Add this c3l library to the compilation.");
 	if (full)
diff --git a/src/compiler/sema_expr.c b/src/compiler/sema_expr.c
index 472de46c9..7e65de9e9 100644
--- a/src/compiler/sema_expr.c
+++ b/src/compiler/sema_expr.c
@@ -10169,9 +10169,9 @@ bool sema_expr_check_discard(SemaContext *context, Expr *expr)
 		return true;
 	}
 	if (!IS_OPTIONAL(expr)) return true;
-	RETURN_SEMA_ERROR(expr, "An optional value may not be discarded, you can ignore it with a void cast '(void)', rethrow on optional with '!' or panic '!!' to avoid this error.");
+	RETURN_SEMA_ERROR(expr, "An optional value was discarded, you can assign it to a variable, ignore it with a void cast '(void)', rethrow on optional with '!' or panic '!!' to avoid this error.");
 ERROR_ARGS:
-	RETURN_SEMA_ERROR(expr, "The result of this call is optional due to its argument(s). The optional result may not be implicitly discarded. Consider using '(void)', '!' or '!!' to handle this.");
+	RETURN_SEMA_ERROR(expr, "The result of this call is optional due to its argument(s). This optional result may not be implicitly discarded. Please assign it to a variable, ignore it with '(void)', rethrow with '!' or panic with '!!'.");
 }
 
 bool sema_analyse_expr(SemaContext *context, Expr *expr)
diff --git a/test/test_suite/errors/optional_designated.c3 b/test/test_suite/errors/optional_designated.c3
index 65185ae13..ca8cbceb5 100644
--- a/test/test_suite/errors/optional_designated.c3
+++ b/test/test_suite/errors/optional_designated.c3
@@ -4,7 +4,7 @@ struct Foo { int a; }
 struct Bar { int b; Foo f; }
 fn void main()
 {
-	(Bar) { .f = (Foo) { foo() } }; // #error: not be discarded
+	(Bar) { .f = (Foo) { foo() } }; // #error: An optional value was discarded
 }
 
 fn int? foo() => 1;
\ No newline at end of file
diff --git a/test/test_suite/errors/optional_discarded_func.c3 b/test/test_suite/errors/optional_discarded_func.c3
index f7689fba5..117b8f2b5 100644
--- a/test/test_suite/errors/optional_discarded_func.c3
+++ b/test/test_suite/errors/optional_discarded_func.c3
@@ -14,7 +14,7 @@ fn void test2()
 	int? x;
 	int y;
 	abc(y);
-	abc(x) + 4; // #error: An optional value may not be discarded
+	abc(x) + 4; // #error: An optional value was discarded
 }
 
 fn void test3()
@@ -30,7 +30,7 @@ fn void test4()
 	int? x;
 	int y;
 	def2(1);
-	def2(x) + 4; // #error: An optional value may not be discarded
+	def2(x) + 4; // #error: An optional value was discarded
 }
 
 fn void test5()
@@ -50,5 +50,5 @@ fn void test6()
 fn void test7()
 {
 	int y;
-	def3(y) + 4; // #error: An optional value may not be discarded
+	def3(y) + 4; // #error: An optional value was discarded
 }
diff --git a/test/test_suite/errors/optional_discarded_macro.c3 b/test/test_suite/errors/optional_discarded_macro.c3
index f33c588b0..1ad4ef90c 100644
--- a/test/test_suite/errors/optional_discarded_macro.c3
+++ b/test/test_suite/errors/optional_discarded_macro.c3
@@ -14,7 +14,7 @@ fn void test2()
 	int? x;
 	int y;
 	abc(y);
-	abc(x) + 4; // #error: An optional value may not be discarded
+	abc(x) + 4; // #error: An optional value was discarded
 }
 
 fn void test3()
@@ -30,7 +30,7 @@ fn void test4()
 	int? x;
 	int y;
 	def2(1);
-	def2(x) + 4; // #error: An optional value may not be discarded
+	def2(x) + 4; // #error: An optional value was discarded
 }
 
 fn void test5()
@@ -50,5 +50,5 @@ fn void test6()
 fn void test7()
 {
 	int y;
-	def3(y) + 4; // #error: An optional value may not be discarded
+	def3(y) + 4; // #error: An optional value was discarded
 }