diff --git a/Source/smvv.f90 b/Source/smvv.f90
index 930e19b7fd8..debf00b103e 100644
--- a/Source/smvv.f90
+++ b/Source/smvv.f90
@@ -986,6 +986,7 @@ SUBROUTINE SMOKE3D_TO_FILE(NM,TIME,DX,SMOKE3D_INDEX,VALS,NX,NY,NZ)
       VAL_FDS = MIN(TEMP_MAX_SMV,MAX(TEMP_MIN,VALS(I)))
       VAL_SMV = 254*((VAL_FDS-TEMP_MIN)/(TEMP_MAX_SMV-TEMP_MIN))
       BUFFER_IN(I) = CHAR(INT(VAL_SMV))
+      MAX_VAL = MAX(VAL_FDS,MAX_VAL)
    ENDDO
 
 ELSE