diff --git a/stb_sprintf.h b/stb_sprintf.h
index 0ad26b2..f63e3ea 100644
--- a/stb_sprintf.h
+++ b/stb_sprintf.h
@@ -332,7 +332,17 @@ STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB *callback,
             if (callback)
                if ((STB_SPRINTF_MIN - (int)(bf - buf)) < 4)
                   goto schk1;
-            *(stbsp__uint32 *)bf = v;
+            #ifdef STB_SPRINTF_NOUNALIGNED
+                if(((stbsp__uintptr)bf) & 3) {
+                    bf[0] = f[0];
+                    bf[1] = f[1];
+                    bf[2] = f[2];
+                    bf[3] = f[3];
+                } else
+            #endif
+            {
+                *(stbsp__uint32 *)bf = v;
+            }
             bf += 4;
             f += 4;
          }