diff --git a/aegisub/src/utils.cpp b/aegisub/src/utils.cpp
index 7b911b050..1ae31b165 100644
--- a/aegisub/src/utils.cpp
+++ b/aegisub/src/utils.cpp
@@ -34,14 +34,9 @@
 /// @ingroup utility
 ///
 
-
-///////////
-// Headers
 #include "config.h"
 
 #ifndef AGI_PRE
-#include <set>
-
 #ifdef __UNIX__
 #include <unistd.h>
 #endif
@@ -169,27 +164,23 @@ void GetWordBoundaries(const wxString text, IntPairVector &results, int start, i
 	if (end < 0) end = text.size();
 
 	// Delimiters
-	static std::set<wxUniChar> delims;
-	if (delims.empty()) {
-		const wxUniChar delim_chars[] = {
-			0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0028,
-			0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x003a,
-			0x003b, 0x003d, 0x003f, 0x0040, 0x005b, 0x005c, 0x005d, 0x005e,
-			0x005f, 0x0060, 0x007b, 0x007c, 0x007d, 0x007e, 0x00a1, 0x00a2,
-			0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00aa, 0x00ab,
-			0x00b0, 0x00b6, 0x00b7, 0x00ba, 0x00bb, 0x00bf, 0x02dc, 0x0e3f,
-			0x2010, 0x2013, 0x2014, 0x2015, 0x2018, 0x2019, 0x201c, 0x201d,
-			0x2020, 0x2021, 0x2022, 0x2025, 0x2026, 0x2026, 0x2030, 0x2031,
-			0x2032, 0x203b, 0x203b, 0x203d, 0x2042, 0x2044, 0x20a6, 0x20a9,
-			0x20aa, 0x20ac, 0x20ad, 0x2116, 0x2234, 0x2235, 0x2420, 0x2422,
-			0x2423, 0x2506, 0x25ca, 0x2605, 0x261e, 0x2e2e, 0x3000, 0x3001,
-			0x3002, 0x3008, 0x3009, 0x300a, 0x300b, 0x300c, 0x300d, 0x300e,
-			0x300f, 0x3010, 0x3011, 0x3014, 0x3015, 0x3016, 0x3017, 0x3018,
-			0x3019, 0x301a, 0x301b, 0x301c, 0x3030, 0x303d, 0x30fb, 0xff0a,
-			0xff5b, 0xff5d, 0xff5e
-		};
-		delims.insert(delim_chars, delim_chars + sizeof(delim_chars) / sizeof(delim_chars[0]));
-	}
+	const wxUniChar delims[] = {
+		0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0028,
+		0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x003a,
+		0x003b, 0x003d, 0x003f, 0x0040, 0x005b, 0x005c, 0x005d, 0x005e,
+		0x005f, 0x0060, 0x007b, 0x007c, 0x007d, 0x007e, 0x00a1, 0x00a2,
+		0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00aa, 0x00ab,
+		0x00b0, 0x00b6, 0x00b7, 0x00ba, 0x00bb, 0x00bf, 0x02dc, 0x0e3f,
+		0x2010, 0x2013, 0x2014, 0x2015, 0x2018, 0x2019, 0x201c, 0x201d,
+		0x2020, 0x2021, 0x2022, 0x2025, 0x2026, 0x2026, 0x2030, 0x2031,
+		0x2032, 0x203b, 0x203b, 0x203d, 0x2042, 0x2044, 0x20a6, 0x20a9,
+		0x20aa, 0x20ac, 0x20ad, 0x2116, 0x2234, 0x2235, 0x2420, 0x2422,
+		0x2423, 0x2506, 0x25ca, 0x2605, 0x261e, 0x2e2e, 0x3000, 0x3001,
+		0x3002, 0x3008, 0x3009, 0x300a, 0x300b, 0x300c, 0x300d, 0x300e,
+		0x300f, 0x3010, 0x3011, 0x3014, 0x3015, 0x3016, 0x3017, 0x3018,
+		0x3019, 0x301a, 0x301b, 0x301c, 0x3030, 0x303d, 0x30fb, 0xff0a,
+		0xff5b, 0xff5d, 0xff5e
+	};
 
 	for (int i = start; i < end + 1; ++i) {
 		// Current character
@@ -227,7 +218,7 @@ void GetWordBoundaries(const wxString text, IntPairVector &results, int start, i
 				i++;
 			}
 			// Check for standard delimiters
-			else if (delims.count(cur)) {
+			else if (std::binary_search(delims, delims + sizeof(delims) / sizeof(delims[0]), cur)) {
 				if (start != i)
 					results.push_back(std::make_pair(start, i));
 				start = i + 1;