diff --git a/_posts/0004-02-01-Alignment_Free_Kallisto.md b/_posts/0004-02-01-Alignment_Free_Kallisto.md
index 469d3e8..4ab1937 100644
--- a/_posts/0004-02-01-Alignment_Free_Kallisto.md
+++ b/_posts/0004-02-01-Alignment_Free_Kallisto.md
@@ -207,7 +207,7 @@ First create the gene version of the Kallisto TPM matrix
 cd $RNA_HOME/expression/kallisto
 wget https://raw.githubusercontent.com/griffithlab/rnabio.org/master/assets/scripts/kallisto_gene_matrix.pl
 chmod +x kallisto_gene_matrix.pl
-./kallisto_gene_matrix.pl --gtf_file = $RNA_HOME/refs/chr22_with_ERCC92.gtf  --kallisto_transcript_matrix_in = transcript_tpms_all_samples.tsv --kallisto_transcript_matrix_out = gene_tpms_all_samples.tsv
+./kallisto_gene_matrix.pl --gtf_file=$RNA_HOME/refs/chr22_with_ERCC92.gtf  --kallisto_transcript_matrix_in=transcript_tpms_all_samples.tsv --kallisto_transcript_matrix_out=gene_tpms_all_samples.tsv
 column -t gene_tpms_all_samples.tsv | less -S
 
 ```