diff --git a/src/IPhreeqc.f.inc b/src/IPhreeqc.f.inc
index 84336f40..5dcd8e8e 100644
--- a/src/IPhreeqc.f.inc
+++ b/src/IPhreeqc.f.inc
@@ -64,6 +64,7 @@ C
       INTEGER(KIND=4) GetSelectedOutputColumnCount
       LOGICAL(KIND=4) GetSelectedOutputFileOn
       INTEGER(KIND=4) GetSelectedOutputRowCount
+      INTEGER(KIND=4) GetSelectedOutputStringLineCount
       INTEGER(KIND=4) GetSelectedOutputValue
       INTEGER(KIND=4) GetWarningStringLine
       INTEGER(KIND=4) GetWarningStringLineCount
diff --git a/src/IPhreeqc.f90.inc b/src/IPhreeqc.f90.inc
index 6100d518..7f16a6a8 100644
--- a/src/IPhreeqc.f90.inc
+++ b/src/IPhreeqc.f90.inc
@@ -254,6 +254,14 @@
        END INTERFACE
 
 
+       INTERFACE
+        FUNCTION GetSelectedOutputStringLineCount(ID)
+         INTEGER(KIND=4),  INTENT(IN)  :: ID
+         INTEGER(KIND=4)               :: GetSelectedOutputStringLineCount
+        END FUNCTION GetSelectedOutputStringLineCount
+       END INTERFACE
+       
+       
        INTERFACE
         FUNCTION GetSelectedOutputValue(ID,ROW,COL,VTYPE,DVALUE,SVALUE)
          INTEGER(KIND=4),  INTENT(IN)  :: ID