diff --git a/tools/fastx_toolkit/fastx_quality_statistics.xml b/tools/fastx_toolkit/fastx_quality_statistics.xml
index 5997d5dc2ba..ab0c1e47f84 100644
--- a/tools/fastx_toolkit/fastx_quality_statistics.xml
+++ b/tools/fastx_toolkit/fastx_quality_statistics.xml
@@ -1,16 +1,14 @@
 <tool id="cshl_fastx_quality_statistics" name="Compute quality statistics">
 	<description></description>
-	<command>zcat -f $input | fastx_quality_stats -o $output -Q $offset</command>
+	<command>zcat -f $input | fastx_quality_stats -o $output -Q 33</command>
 
 	<inputs>
 		<param format="fastqsanger" name="input" type="data" label="Library to analyse" />
-		<param name="offset" type="hidden" value="33"/>
 	</inputs>
 
 	<tests>
 		<test>
-			<param name="input" value="fastq_stats1.fastq" ftype="fastq"/>
-			<param name="offset" value="64" />
+			<param name="input" value="fastq_stats1.fastq" ftype="fastqsanger"/>
 			<output name="output" file="fastq_stats1.out" />
 		</test>
 	</tests>
diff --git a/tools/metag_tools/split_paired_reads.xml b/tools/metag_tools/split_paired_reads.xml
index 5803347ab21..3e89c3d06e5 100644
--- a/tools/metag_tools/split_paired_reads.xml
+++ b/tools/metag_tools/split_paired_reads.xml
@@ -7,8 +7,8 @@
         <param name="input" type="data" format="fastqsanger" label="Your paired-end file" />
     </inputs>
     <outputs>
-        <data name="output1" format="input"/>
-        <data name="output2" format="input"/>
+        <data name="output1" format="fastqsanger"/>
+        <data name="output2" format="fastqsanger"/>
     </outputs>
     <tests>
         <test>