diff --git a/src/system/libroot/posix/string/strcmp.c b/src/system/libroot/posix/string/strcmp.c
index 56e058e2cb..8ac20d9499 100644
--- a/src/system/libroot/posix/string/strcmp.c
+++ b/src/system/libroot/posix/string/strcmp.c
@@ -15,6 +15,18 @@
 int
 strcmp(char const *a, char const *b)
 {
+	if ((((addr_t)a) & 3) == 0 && (((addr_t)b) & 3) == 0) {
+		uint32* a32 = (uint32*)a;
+		uint32* b32 = (uint32*)b;
+
+		while (*a32 == *b32 && LACKS_ZERO_BYTE((*a32))) {
+			a32++;
+			b32++;
+		}
+		a = (const char *)a32;
+		b = (const char *)b32;
+	}
+
 	while (true) {
 		int cmp = (unsigned char)*a - (unsigned char)*b++;
 		if (cmp != 0 || *a++ == '\0')