diff --git a/crates/goose/src/providers/ollama.rs b/crates/goose/src/providers/ollama.rs
index eb255ed4cedd..169c7c64d655 100644
--- a/crates/goose/src/providers/ollama.rs
+++ b/crates/goose/src/providers/ollama.rs
@@ -65,8 +65,13 @@ impl OllamaProvider {
             .map_err(|e| ProviderError::RequestFailed(format!("Invalid base URL: {e}")))?;
 
         // Set the default port if missing
+        // Don't add default port if:
+        // 1. URL explicitly ends with standard ports (:80 or :443)
+        // 2. URL uses HTTPS (which implicitly uses port 443)
         let explicit_default_port = self.host.ends_with(":80") || self.host.ends_with(":443");
-        if base_url.port().is_none() && !explicit_default_port {
+        let is_https = base_url.scheme() == "https";
+
+        if base_url.port().is_none() && !explicit_default_port && !is_https {
             base_url.set_port(Some(OLLAMA_DEFAULT_PORT)).map_err(|_| {
                 ProviderError::RequestFailed("Failed to set default port".to_string())
             })?;
diff --git a/crates/goose/src/providers/toolshim.rs b/crates/goose/src/providers/toolshim.rs
index c3b6306dc983..eea5bd6e4c6d 100644
--- a/crates/goose/src/providers/toolshim.rs
+++ b/crates/goose/src/providers/toolshim.rs
@@ -96,8 +96,13 @@ impl OllamaInterpreter {
             .map_err(|e| ProviderError::RequestFailed(format!("Invalid base URL: {e}")))?;
 
         // Set the default port if missing
+        // Don't add default port if:
+        // 1. URL explicitly ends with standard ports (:80 or :443)
+        // 2. URL uses HTTPS (which implicitly uses port 443)
         let explicit_default_port = host.ends_with(":80") || host.ends_with(":443");
-        if base_url.port().is_none() && !explicit_default_port {
+        let is_https = base_url.scheme() == "https";
+
+        if base_url.port().is_none() && !explicit_default_port && !is_https {
             base_url.set_port(Some(OLLAMA_DEFAULT_PORT)).map_err(|_| {
                 ProviderError::RequestFailed("Failed to set default port".to_string())
             })?;