diff --git a/docs/Genes-and-Drugs.md b/docs/Genes-and-Drugs.md
index ade16b35..d2fdcbec 100644
--- a/docs/Genes-and-Drugs.md
+++ b/docs/Genes-and-Drugs.md
@@ -61,7 +61,7 @@ HLA calls, respectively, using sequencing data.
 
 ## Drugs
 
-The following table lists drugs for which PharmCAT has recommendations for, along with their sources. 
+The following table lists the 175 drugs for which PharmCAT has recommendations for, along with their sources. 
 
 | Drug | CPIC | DPWG | FDA Label | FDA PGx Assoc |
 | :--- | :---: | :---: | :---: | :---: |
diff --git a/src/main/java/org/pharmgkb/pharmcat/util/GeneDrugSummary.java b/src/main/java/org/pharmgkb/pharmcat/util/GeneDrugSummary.java
index 6125a94b..e401c594 100644
--- a/src/main/java/org/pharmgkb/pharmcat/util/GeneDrugSummary.java
+++ b/src/main/java/org/pharmgkb/pharmcat/util/GeneDrugSummary.java
@@ -141,7 +141,8 @@ public void write(Path documentationDir) throws IOException {
     String phenotypesTemplate = FileUtils.readFileToString(PHENOTYPES_TEMPLATE_FILE.toFile(), Charsets.UTF_8);
     Path summaryFile = documentationDir.resolve(SUMMARY_FILE_NAME);
     try (BufferedWriter writer = Files.newBufferedWriter(summaryFile)) {
-      writer.write(String.format(summaryTemplate, matcherGeneList, outsideCallGeneList, drugList));
+      writer.write(String.format(summaryTemplate, matcherGeneList, outsideCallGeneList, drugSourceMap.keySet().size(),
+          drugList));
     }
     sf_logger.info("Saving summary to {}", summaryFile);
 
diff --git a/src/main/resources/org/pharmgkb/pharmcat/util/summary.md b/src/main/resources/org/pharmgkb/pharmcat/util/summary.md
index cc1f1119..8e69cf6a 100644
--- a/src/main/resources/org/pharmgkb/pharmcat/util/summary.md
+++ b/src/main/resources/org/pharmgkb/pharmcat/util/summary.md
@@ -35,6 +35,6 @@ HLA calls, respectively, using sequencing data.
 
 ## Drugs
 
-The following table lists drugs for which PharmCAT has recommendations for, along with their sources. 
+The following table lists the %d drugs for which PharmCAT has recommendations for, along with their sources. 
 
 %s