diff --git a/reactos/base/system/format/format.c b/reactos/base/system/format/format.c
index ba9f42b3a05..4eae18bb614 100755
--- a/reactos/base/system/format/format.c
+++ b/reactos/base/system/format/format.c
@@ -185,7 +185,7 @@ FormatExCallback (
 		if( *status == FALSE ) {
 
 			LoadString( GetModuleHandle(NULL), STRING_FORMAT_FAIL, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-			_tprintf(szMsg);
+			_tprintf("%s", szMsg);
 			Error = TRUE;
 		}
 		break;
@@ -204,7 +204,7 @@ FormatExCallback (
 	case STRUCTUREPROGRESS:
 	case CLUSTERSIZETOOSMALL:
 		LoadString( GetModuleHandle(NULL), STRING_NO_SUPPORT, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-		_tprintf(szMsg);
+		_tprintf("%s", szMsg);
 		return FALSE;
 	}
 	return TRUE;
@@ -320,7 +320,7 @@ _tmain(int argc, TCHAR *argv[])
 	//
 	if( !LoadFMIFSEntryPoints()) {
 		LoadString( GetModuleHandle(NULL), STRING_FMIFS_FAIL, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-		_tprintf(szMsg);
+		_tprintf("%s", szMsg);
 		return -1;
 	}
 
@@ -422,7 +422,7 @@ _tmain(int argc, TCHAR *argv[])
 					break;
 				}
 				LoadString( GetModuleHandle(NULL), STRING_ERROR_LABEL, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-				_tprintf(szMsg);
+				_tprintf("%s", szMsg);
 			}
 		}
 
@@ -471,7 +471,7 @@ _tmain(int argc, TCHAR *argv[])
 				((float)(LONGLONG)totalNumberOfBytes.QuadPart)/(float)(1024.0*1024.0));
 		}
 		LoadString( GetModuleHandle(NULL), STRING_CREATE_FSYS, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-		_tprintf(szMsg);
+		_tprintf("%s", szMsg);
 	}
 
 	//
@@ -489,7 +489,7 @@ _tmain(int argc, TCHAR *argv[])
 #endif
 	if( Error ) return -1;
 	LoadString( GetModuleHandle(NULL), STRING_FMT_COMPLETE, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-	_tprintf(szMsg);
+	_tprintf("%s", szMsg);
 
 	//
 	// Enable compression if desired
@@ -504,7 +504,7 @@ _tmain(int argc, TCHAR *argv[])
 #endif
 
 			LoadString( GetModuleHandle(NULL), STRING_VOL_COMPRESS, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-			_tprintf(szMsg);
+			_tprintf("%s", szMsg);
 		}
 	}
 
@@ -514,7 +514,7 @@ _tmain(int argc, TCHAR *argv[])
 	if( !GotALabel ) {
 
 		LoadString( GetModuleHandle(NULL), STRING_ENTER_LABEL, (LPTSTR) szMsg,RC_STRING_MAX_SIZE);
-		_tprintf(szMsg);
+		_tprintf("%s", szMsg);
 		_fgetts( input, sizeof(LabelString)/2, stdin );
 
 		input[ _tcslen(input)-1] = 0;