diff --git a/configs/slpkg.toml b/configs/slpkg.toml
index 1de6e1cb..8b5fd75b 100644
--- a/configs/slpkg.toml
+++ b/configs/slpkg.toml
@@ -55,9 +55,9 @@ PROGRESS_SPINNER = "pixel"
 # Default is green. [green/violet/yellow/blue/cyan/grey/red]
 SPINNER_COLOR = "green"
 
-# Enable or disable case-insensitive pattern matching.
-# Default is false. [true/false]
-CASE_INSENSITIVE = false
+# Enable or disable case-sensitive pattern matching.
+# Default is true. [true/false]
+CASE_SENSITIVE = true
 
 # Slackware command for install packages, instead, you can use 'installpkg'.
 # Normally upgradepkg only upgrades packages that are already installed
diff --git a/man/slpkg.1 b/man/slpkg.1
index 7c325081..3d173190 100644
--- a/man/slpkg.1
+++ b/man/slpkg.1
@@ -182,7 +182,7 @@ Download files in parallel to speed up the process.
 .P
 .B -m, --no-case
 .RS
-Case-insensitive pattern matching packages.
+Case-sensitive pattern matching packages.
 (to be used with: -b, build, -i, install, -d, download, -s, search, -f, find, -w, view, -t, tracking, -e, dependees)
 .RE
 .P
diff --git a/slpkg/configs.py b/slpkg/configs.py
index 954380ca..5cb82f7e 100644
--- a/slpkg/configs.py
+++ b/slpkg/configs.py
@@ -46,7 +46,7 @@ class Configs:
     spinning_bar: str = True
     progress_spinner: str = 'pixel'
     spinner_color: str = 'green'
-    case_insensitive: bool = False
+    case_sensitive: bool = True
 
     proxy_address: str = str()
     proxy_username: str = str()
@@ -83,7 +83,7 @@ class Configs:
             spinning_bar: str = config['SPINNING_BAR']
             progress_spinner: str = config['PROGRESS_SPINNER']
             spinner_color: str = config['SPINNER_COLOR']
-            case_insensitive: bool = config['CASE_INSENSITIVE']
+            case_sensitive: bool = config['CASE_SENSITIVE']
             proxy_address: str = config['PROXY_ADDRESS']
             proxy_username: str = config['PROXY_USERNAME']
             proxy_password: str = config['PROXY_PASSWORD']
diff --git a/slpkg/main.py b/slpkg/main.py
index 36f54bd5..7bd88c90 100644
--- a/slpkg/main.py
+++ b/slpkg/main.py
@@ -616,7 +616,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -643,7 +643,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -668,7 +668,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -703,7 +703,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -721,7 +721,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -745,7 +745,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -763,7 +763,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):
@@ -783,7 +783,7 @@ class Argparse(Configs):
             self.check.is_database_empty()
             packages: list = self.is_file_list_packages()
 
-            if self.utils.is_option(self.flag_no_cases, self.flags) or self.case_insensitive:
+            if self.utils.is_option(self.flag_no_cases, self.flags) or not self.case_sensitive:
                 packages: list = self.utils.case_insensitive_pattern_matching(packages, self.data)
 
             if self.utils.is_option(self.flag_searches, self.flags):